Every year during the reporting season, I regret it: why didn't I keep good records to save trouble back then... Now I've learned my lesson, and I make a note of every swap/cross-chain/airdrop: time, chain, wallet address, transaction hash, route used, slippage set, whether there's tax (the kind that deducts a cut on both buy and sell), and also take a screenshot of the balance before and after the transaction. Honestly, it's not for precise calculations, but to avoid relying on memory for end-of-year reconciliation.

Recently, everyone has been comparing RWA and US bond yields to on-chain yield products. I also take a look, but no matter how "financially sound" the returns seem, the chaos of all the inflows and outflows on the chain will explode without proper records. Anyway, I now prefer to go slower and keep all evidence... otherwise, when I scroll through browser history until 2 a.m., my mood will just collapse.