Most people learn investing like scrolling a feed: a tip here, a hot name there, nothing that sticks. Treat it like a curriculum instead. Fundamentals first, in order, before anything fancy. But a roadmap alone fades. What makes it compound is a notebook that improves itself.
Here is the habit. Every time you make a decision, write three lines: what you did, why, and what you expected. When reality answers, add one line on what you learned and turn it into a rule. Next decision, read your own rules first.
Do this and your notebook stops being a diary and becomes a teacher. Your reasoning gets sharper, your mistakes stop repeating, and you return to it because it actually helps. That is what keeps beginners in the game long enough to get good: not motivation, but a system that pays you back for showing up.
What is one rule your own past decisions have already taught you?