I had about 70 BTC from an RotMG account that I sold back in the day. All of that is gone now.
I could sulk on the fact that I could have almost 3 million, but at the end of the day, hindsight is 20/20 and it is in the past. You are going to have to move on past that. You are not alone in this and it happens to the best of us. Don't worry about it brotha move on from here and use that knowledge to make yourself some more money.