It often become a good opportunity when you sell at a peak and after that the correction come and you buy again with low price but many people miss that opportunity who then regret but I do not regret when I miss that opportunity because I do not do greed and remain satisfied with my current amount of coins and I know in the future the price will grow again to another ATH and my current coins are enough to give me enough profit. With this thought I keep myself tension free.
What is your views and conditions at that time?
I once skipped ATH because I didn't think it was the highest ATH, which is natural because no one knows where the ATH will be. Regret for sure, but there's nothing to regret, just make it happen experience so that it does not happen again in the future.