I've recently been debating again between grid/DCA and a single shot, which one is better for sleep... Honestly, the thrill of a single shot is exciting; after confirming, it's like a cat's paw swipe, and my heartbeat immediately spikes. The first reaction when waking up in the middle of the night is to check my phone to see if I've been reverse-educated.

Grid and DCA are more like putting a safety rope on yourself; whether you make money or not, that's secondary. At least it prevents your emotions from twitching along with the K-line.
But don't blindly trust "automatic" either. Now AI agents and automatic trading are very popular, but I see many just outsourcing the button to scripts, adding an extra step on-chain interaction, which also adds more security risks... I’d rather earn a little less than wake up to find I didn't revoke permissions or that my wallet was drained.
My biggest fear isn't losing money, but making a decision and then regretting it repeatedly, having a restless night. Anyway, I now prefer small DCA as a foundation; if I really want to go all-in, I only dare to do so with the amount I can sleep over. For now, that's it.