I realize that my biggest problem isn't choosing the wrong coin, but that I want to sell as soon as spot prices go up, and add to my position whenever there's a retracement in futures, and then there's no follow-up... To put it simply, position management boils down to one sentence: don't put "wanting to make quick money" into the same order. Treat spot trading like saving money, set a ratio that allows you to sleep peacefully; even if it drops, it's just annoying, not heartbreaking. Futures (which I only open occasionally) are like buying a ticket—if I lose the ticket money, so be it, don't top up. Recently, I've been arguing about MEV (front-running + unfair ordering), feeling that retail traders should learn to "live longer." We can't control how miners/validators split the rewards, but at least don't put yourself on the menu. Anyway, I'll keep picking up the dust and slowly endure.