There will always be regrets that people will have, but we have to move on knowing that it could've been worse.
I had 2 bitcoin during the time that bitcoin was worth around $300, and I exchanged them for amazon gift cards to buy something at that time. If I had kept them, I would've have been in a much better place today, but I still hold on to the small amount i have. I've recovered one of my wallets from a few years ago and now buying a bit here and there. My goal is to reach 0.1 btc before the end of the year.