There is absolutely nothing wrong you did. Rationality requires that you sell your stock at unjustifiable valuations and move that money to other stock with better margin of safety.
If stock corrected 30-40% from high valuations you will be patting yourself on the back. It’s impossible in the market to make right calls 100% of times and no one has ever been able to do it.
What you should feel good about is that you didn’t lose your capital and you made significant gains which most of the people take any day.