You could have sold half. But anyway I hope the lesson you learned is: we are always frustrated. I mean, if you sold half and it went down you would be frustrated because you sold only half. If it goes upwards, then you are frustrated you sold half instead of nothing. Trust me, you will never consistently sell and buy at the best prices. You will consistently do otherwise. So stay cool, enjoy your 100% profit and move on!
or hodl, if you wanna make daytrade profit tough you gotta spread the buy and sell orders on the way up and down
You panic sold at 9000, well I am just bought my first batch of TRST at 10900. Have a feeling it'll do the same as Stratis
(which I bought at 17k sats and is at 48k sats now).