I found that the biggest difference between grid/DCA and a single trade isn't the profit, but whether you can sleep well or not. Grid feels like installing a "Don't be impulsive" barrier for yourself; even if you lose money, you can pretend you're following your plan, and just a quick glance in the middle of the night lets you go back to sleep. A single trade is very real—it's satisfying, but your mind automatically opens the trading window, even after turning off the lights, still thinking about whether to cut losses or add another position.

Recently, the "profit stacking" of staking and shared security systems has been criticized as a scam, and I can relate a bit: the more layers there are, the more likely I am to overthink at night, fearing that if one layer fails, everything will collapse together. Anyway, I can impulsively experiment with small positions now, but for large positions, I stick to honest grid+DCA, so at least I won't scold myself too harshly during reviews. That's all for now.