Underappreciated advice: Get friends who are significantly older than you. There's no mimetic competition. Just decades of wisdom they love to share.… - George Mack

Useful rule of thumb: If someone says "trust the science", distrust them and whatever they've just said.

Lesson from video games: The most addictive video games in the world avoid overwhelm (this is too difficult) and underwhelm (this is too boring). When designing anything in your life, optimise for whelm. If too much whelm, break into easier chunks. If too little whelm, move faster and harder.

A good rule of thumb is to assume you’re always neglecting non-linear games. Think 10x more about these things than your minds default response: What city you live in, mattress, hiring a personal trainer, literally any form of hiring, dating app profile, how you introduce yourself, salary negotiations, how close you live to friends, what you want in a partner. You have to fight Parkinson’s law because you could do these tasks in minutes, which is why most people spend mere minutes on 1000x giga-decisions.