Just checked an old wallet and looked at a few PFPs I bought last year, almost laughed at myself in frustration... The exchange keeps transferring back and forth, and there are a few friend transfers on the blockchain. If I need to report at the end of the year, these records not being complete would drive me crazy.

Now I’m very simple: every time I transfer in or out, I take a quick screenshot and add a note saying “what for,” then put the blockchain hash into a table. Don’t worry about profit or loss first—just clearly write down “whose this transaction is and why it moved.”
Recently, everyone is watching large transfers and hot/cold wallet movements as smart money. I watch the spectacle, but when it comes to reconciliation day, you’ll realize that being smart doesn’t matter. Whether you can recover the flow of funds is what’s crucial… Anyway, I’m just doing this to save myself for now.