Been there before. My worse one was a 400% intraday gain on a single stock. I sold it too soon at a loss than it just kept climbing from there. Was too chickened out into chasing and ofc by the time I finally decided to jump in again it was already too late.
I've been there and I've done that too. Or something similar. It's painful.
...also applies to your trading acct/style too, as far as I'm concerned