I shorted SNDK at 335$ and lost 20k in Juanuary.. And for a brief moment i considered going long at that point. That would have made me a return of around 200k.. i keep thinking about that.. what would have been.. i keep thinking I missed a lifetime opportunity.. I want to invest long term in stuff, I had a slip in january, a poor judgement driven by greed.. i am not the kind of investor to short or gamble short term. But how do I get over this feeling of regret?