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!
We need to focus on what is being right now, how the situation is right now, and the current condition of our protfolio. Regretting of something is not needed in this crypto world.
But, we should also not forget about the previous mistakes, let it be our precious lessons in order not to do it again right now or in the future.
Learning from the previous our own experience is the best teacher for us. We can set a new strategy or modified strategy by seeing the rpevious wrong strategy.