I'm sorry to hear, nobody could see this coming and i know how it feels when you sell too early. The intelligent investor written by the economist brenjaman graham thought me that you should never sell your assets too early for short term rpofits and that's why i will never do it again. 

A couple of project i've invested in are DASH, POLYBIUS, BANCOR, ETHEREUM and UBIQ
edit: also exscudo ( a decentralised exchange with professional trade terminals).