My past self: After trading, I would close the page and was too lazy to even save screenshots, thinking "Everything's recorded on the chain"... But when it came to calculating taxes at the end of the year, going through dozens of wallets and exchanges, my hair literally stood on end. Now I basically: every time I make a large transaction / cross-chain / change wallets, I export a statement (like a CSV), then put the corresponding transaction hash and notes (what it's for) into the same table, or I’ll forget.

Recently, with staking, shared security, and these "profit stacking and nested" schemes getting heated, I’m actually more worried about the records also getting nested: transferring in and out layer by layer, until you can’t even explain it yourself. Anyway, I prefer to keep things simple and clear first... Otherwise, if something goes wrong, even if I get serious, I won’t be able to save myself.