Happens to the best of us, mate, yesterday I read a great article on how we all are irrational animals trying to live up to the impossible expectations of rational market actor who's constantly soaking in info. We all make horrible, stupid mistakes, so don't beat yourself up to it too ahrd. ( https://hackernoon.com/the-cryptocurrency-trading-bible-43d0c57e3fe6)
What I'm trying to do is talk to some of my friends about positions and market forecasts, because even if I think they're wrong about market, they might help me evaluate my possibly irrational decisions. (keeping a margin trade overnight for example, it's really a rookie mistake, sorry, but I feel that it's something my friend would've at least made a sarcastic remark about :D)
Good luck!