I later figured out one bit of plain talk: don’t let any single position get so large that it has to be correct.

If you can’t hold spot, it’s usually because you bought too much—once it dips, you get panicky and want to run.
For perpetual futures, liquidation is even more direct: leverage + going full size is like setting a timed explosive device for yourself.
My approach is pretty simple and a bit old-school: first, split your total position into smaller pieces so you’re allowed to be wrong a few times and still be standing.
Before you place an order, think through the worst-case scenario and ask yourself whether you can sleep at night—if not, then reduce.
Recently, hardware wallets are out of stock, and phishing links are flying everywhere. In times like this, don’t rush to add positions or chase hot trends—one accidental slip can make you lose faster than the market moves.
For now, that’s it. I’m going to cut back my remaining pending orders by one more level, and also re-check all the links I use most often.