If you had cryptos in the past and could have made lots, to kick yourself over it. If you get caught up over what could have been, you will go insane. So focus on the current time. Good luck!
That is probably one of the most trading recommendation we can try and follow. Together with not trade based on your emotions thess are the two tips I try and keep in mind every time I check my coins.
It's hard to control my thoughts and drift into the what could have been scenarios. When looking at very successful alt coins my brain always asks why didn't I invest in them. Unfortunately we can't turn back time and there will always be better decision we could have done. But we need to look to the future and should learn from our mistakes, not wishing we never had done them in the first place.