Hi, this is Ray.

I want to make a confession that took me about a decade to admit. For years, I tried to learn things by copying the exact study methods of people I admired. I'd read about how some productivity influencer studied 4 hours a day in 25-minute Pomodoro blocks with classical music and rigid color-coded notes, and I'd try to import the entire system wholesale into my life. I'd buy the same notebooks. I'd download the same apps. I'd try to wake up at the same horrifying hour. And then, predictably, the system would last about 11 days before I'd quit in frustration, conclude that I "just didn't have what it takes," and go back to my chaotic default approach.

The pattern repeated for years. Different methods, different gurus, same outcome. I'd try Cal Newport's deep work blocks. I'd try Tim Ferriss's interval approach. I'd try a friend's elaborate Notion system. I'd try the Zettelkasten method recommended by every smart-looking person on Twitter. None of them stuck. Each time, I blamed myself. The methods worked for those people. The problem must be me.

Eventually (around the time I started actually paying attention to what was happening instead of just collecting more methods) I realized the problem wasn't me. The problem was that I was trying to use systems designed for other people's brains, other people's lives, other people's situations. The advice wasn't bad. It just wasn't MINE. And no amount of willpower could make someone else's perfectly-fitted system work for my different body, schedule, energy patterns, knowledge base, and goals.

Today's newsletter is about building a learning approach that actually fits you. The research on this is more interesting than the popular discourse suggests… including some important findings about what does and doesn't actually differ between learners. We'll go through the actual variables that matter, the variables that don't matter as much as people claim, and how to construct a system calibrated to your specific situation. Let's get into it.

SaaS pricing has changed. Your billing stack probably hasn't. As usage-based and hybrid models become the default, finance teams are left stitching together spreadsheets, reconciling data manually, and closing books under pressure. The cost? Revenue leakage, audit risk, and forecasts no one trusts.

Our new Buyer's Guide for Modern SaaS Billing breaks down exactly what to demand from a revenue platform built for today's complexity — from automated usage billing to AI-native collections and rev rec. Whether you're evaluating vendors or rethinking your stack, this is your framework for getting it right.

Download the Free Guide.

Before we can build anything useful, we have to deal with one of the most popular and persistent misconceptions about how individuals differ in learning. You've probably heard some version of it: "I'm a visual learner." "She's an auditory learner." "He learns best by doing things kinesthetically." The idea that people fall into discrete "learning style" categories (visual, auditory, reading/writing, kinesthetic) has become so embedded in the culture that most people assume it's settled science.

It isn't. The research community has spent decades trying to find evidence that matching instruction to a person's "learning style" actually improves their learning. The evidence has not materialized. Multiple major reviews and meta-analyses have failed to find support for the "matching hypothesis"… the claim that visual learners learn better with visual material, auditory learners with auditory material, and so on. People DO have preferences for how they like to learn, but those preferences don't translate into better outcomes when instruction is matched to them. The myth survives because it FEELS true and provides a tidy explanation for why some things click and others don't. The science says the explanation is wrong.

This matters for our purposes because the popular advice "figure out your learning style" is a dead end. It points you at a variable that doesn't actually do anything. Meanwhile, the variables that DO matter (the ones we'll get to in a second) often get ignored because everyone's busy taking pop-psych quizzes to find out if they're a visual learner. The opportunity cost of the learning styles myth is real.

What's actually true: people genuinely DO differ in ways that affect their learning. Just not in the neat categorical way the learning styles framework suggests. The real variables are messier, more interesting, and much more actionable.

Here's the more useful framing. According to research on personalized learning, the variables that actually matter for individual differences in learning include things like prior knowledge, current goals, available time, energy patterns, social context, motivation sources, and the specific cognitive demands of the material being learned. As one comprehensive review put it, personalized learning is tailored to an individual learner's strengths, interests, and needs, accentuating that it is self-initiated, student-centered, and involves personal relevance… with principles including personalized instructional goals, personalized instruction focused on learners' interests, personal learning choices, and learner control. The key distinction here is between superficial preferences (like "visual vs. auditory") and substantive differences (like what you already know, why you're learning this, and how it fits into the rest of your life).

Let me get specific about the variables that actually matter:

Prior knowledge. What you already know shapes how you should learn new material more than almost anything else. A learner with strong background in a related domain can absorb new material faster, often by jumping to advanced explanations that would be impenetrable to a true beginner. A learner with weak prior knowledge often needs more foundational scaffolding before the advanced stuff makes sense. Generic study advice ignores this and treats all learners as if they're starting from the same place. They're not.

Goals and motivation. Why you're learning something dramatically affects how you should learn it. The person studying for an exam in three weeks needs a different approach than the person building lifelong fluency. The person learning a skill to use professionally next year needs a different approach than the person exploring a hobby. The hobbyist optimizing for joy needs a different approach than the credential-seeker optimizing for outcome. Same material, completely different optimal approaches.

Time and life constraints. This one gets ignored constantly in optimization content. The single parent with 30 minutes a day after the kids are asleep cannot use the same study system as the college student with 6 unstructured hours daily. The methods that work for one will fail catastrophically for the other. Most popular advice implicitly assumes lots of time and few constraints, which is why it doesn't apply to most actual adult learners.

Energy patterns. Some people are sharp in the morning and useless after 8pm. Others come alive at night. Some get a second wind after dinner. Forcing yourself to study during your low-energy times produces inefficient, frustrated learning. Working with your actual energy patterns produces dramatically better outcomes. As the personalized learning research emphasizes, students often work at their own pace, utilizing adaptive learning technologies and self-directed activities, with educators playing a crucial role as facilitators and guides. Self-pacing matters in a way that uniform schedules don't accommodate.

Material type. Different subjects require genuinely different approaches. Math requires lots of practice problems. Language requires conversation and exposure. History benefits from narrative and connection-making. Coding requires building things. Trying to use one technique (say, intense flashcard practice) for all of these will work well for some and terribly for others. Match the technique to the material, not to some abstract notion of how you "best" learn.

Social context. Some people thrive learning alone. Others need community and accountability. Some need a teacher. Others find teachers stifling. The social structure of your learning is a real variable that has nothing to do with whether you're "introverted" or "extroverted" in some shallow sense. Different domains, different stages of learning, and different personal patterns mean different social structures work for different learners.

Okay, here's the practical framework I've landed on after years of trial and error. The structure is the same for everyone. The content is yours to fill in based on your specific situation.

Before you design any system, figure out what's actually true about your life. Not what you wish were true. What IS true. Specifically:

Write all this down. It will look depressingly modest compared to the influencer who claims to study 6 hours a day. That's fine. Your system needs to work for YOUR life, not for someone else's curated highlight reel.

Vague goals produce vague systems that produce vague results. Get specific. Not "learn Spanish" but "be able to have a 15-minute conversation about everyday topics with my Spanish-speaking neighbor by next summer." Not "get better at programming" but "build a working personal project using React by the end of this quarter." The specificity matters because different goals require different approaches, and you can't pick the approach until you've named the goal.

This is also where you decide your TIMELINE. Goals without timelines tend to drift indefinitely. Goals with realistic timelines force you to make actual choices about what to focus on. Be honest about timeline. "Fluent in 30 days" is almost always a lie someone is selling you. "Conversational basics in 6 months with 30 minutes a day" is realistic and useful.

Different material genuinely demands different core techniques. Match what you'll do to what you're learning:

For factual knowledge (vocabulary, dates, formulas, definitions): Spaced repetition (Anki) is unbeatable. Active recall via flashcards. Some teaching of the material to yourself or others.

For conceptual understanding (theories, frameworks, abstract relationships): The Feynman technique. Writing explanations in your own words. Discussion with others. Connecting concepts to examples you actually care about.

For procedural skills (coding, math problems, instruments, languages): Lots of practice doing the thing. Feedback loops. Deliberate practice on weak spots. Building real projects rather than just doing exercises.

For complex integrative work (writing, design, strategy): Apprenticeship-style learning where you study examples, try producing your own, get feedback, and iterate. Real output that gets criticized by knowledgeable people.

You'll probably need a mix because most real learning involves multiple of these types. Match the technique to the material type. Don't try to use Anki to learn to write essays. Don't try to use the Feynman technique to memorize vocabulary. Right tool, right job.

Look at your real life. Where are the windows where you have ENERGY, not just time? Schedule your hardest cognitive work there. Save easier review tasks for your low-energy times. This sounds obvious. Almost nobody does it. Most people schedule "study time" wherever it fits, regardless of energy state, then wonder why the studying isn't producing results.

If you have a 5am sharpness, use that for deep work. If you have a 9pm wind, use that. If you have a 30-minute commute and can listen to audio, use that for review. If your only available time is when you're tired, accept that and design for lower-cognitive-demand work during those windows… review rather than encoding, practice rather than learning new concepts.

This is where the previous newsletters all connect. Sleep, hydration, movement, real food, time with people who care about you, relaxation breaks, walks before study sessions, hobbies that aren't optimized for productivity. None of these are negotiable. All of them disproportionately affect how well your studying works. A perfectly designed system running on broken foundations produces less than a mediocre system running on solid foundations. Build the foundation first. Add the system on top.

Use the data-driven approach I covered in a previous newsletter. Track what you're doing, how it's going, and what's working. After 2-3 weeks of running your system, evaluate. What's producing results? What isn't? Adjust. Keep what works, drop what doesn't, try something different where you're stuck. This is the most important step and the one most people skip. They build a system, follow it for a while, get frustrated when it doesn't work perfectly, and quit. The right move is to iterate. Your first version won't be optimal. Your fifth version, after several cycles of adjustment, probably will be.

Generic learning advice isn't useless. Most of it contains real wisdom that came from somewhere. The trick is figuring out which parts apply to you and which don't.

Things that apply to almost everyone: Sleep. Hydration. Movement. Active recall over rereading. Spaced repetition over cramming. Real feedback over isolated practice. Foundations over hacks. These are close to universal. Bet on them.

Things that are highly individual: Time of day for studying. Tolerance for music or silence. Optimal session length. Preference for self-directed vs. instructor-led learning. Best subject mix per session. Amount of social interaction in the learning process. These vary so much between people that any rigid advice in these areas is likely to be wrong for most readers.

Things that sound universal but actually aren't: Wake up at 5am. Use a specific note-taking system. Study for exactly X minutes at a time. Have a perfectly clean desk. Use this specific app. Don't drink coffee after a specific hour. These ARE universal recommendations from people who happen to have systems that work for THEM. They're not universal truths. They're personal systems being sold as universal truths.

The skill is in being able to taste-test advice without swallowing it whole. Try something for two weeks. If it works, keep it. If it doesn't, drop it without guilt. The guilt is the problem… people feel like THEY'RE failing when generic advice doesn't work for them, when actually the advice is just the wrong fit. Different person, different situation, different optimal system.

Here's what I want you to take from all this. There is no universally optimal way to learn. There are universally useful principles (active engagement, retrieval practice, sleep, feedback) and universally bad practices (cramming, rereading, pulling all-nighters), but between those poles is a vast space of individual variation that requires you to actually design YOUR approach for YOUR life and YOUR goals.

This is genuinely good news, even though it's slightly harder than "just follow these 10 steps." The good news is that you don't have to fit yourself into someone else's system. You don't have to wake up at 5am if you're a night person. You don't have to use Anki if it doesn't suit how you process information. You don't have to study for 4 hours a day if you have a job and kids. The systems that work for the YouTube productivity people work for them. They might not work for you. That's not your failure. That's just the reality of individual differences mattering more than the universal-method industry wants to admit.

What you need to do, instead, is build something custom. Look at your constraints. Name your goals. Match techniques to material. Schedule around your energy. Maintain your foundations. Track and adjust. The system you build won't look like anyone else's. It also won't look like the perfect system you imagined when you started. It'll be messier, more compromised, and more specific to your actual life. It'll also actually work, which is more than most systems do.

The people who learn the most over decades are usually not the people with the most elaborate systems. They're the people who figured out a workable approach that fits their life and then kept showing up. You can be that person. The path runs through your specific situation, not through someone else's.

Even Aragorn and Frodo didn't use the same fighting style. The ranger had his methods. The hobbit had his. They both saved Middle-earth. Different paths, both effective. Find yours.

Keep learning (in the way that actually works for you),

Ray