In 2017 I got a lot of coins like stellar and ethereum, but I didn't think to keep them, so I sold them when they were cheap, it was the stupidest thing I ever did
The second stupidest thing I did was waste my bitcoins on a gambling site.
So true, I do regret selling my eth back then in 2016-2017, that was such a waste.
I managed to let go of this sin, because its like a part of learning crypto investment basic things.
However, I wouldn't be able to forgive myself for gambling the investment funds that sounds just like a terrible idea