And in the meantime the price per share just goes down and down and every day i'm telling myself i'm gonna wait for it to go back up before i sell so i won't have a massive loss. And every day my loss gets bigger

Not blaming anyone but myself here by the way. The price just went up with every miner they bought. Till i bought shares and that day it stopped and went down.
It's just quite frustrating.
Sell now? Get those last few Bitcoins back before it drops even more? What to do?