Why do people sell low, I will never understand. I

Why do people sell low, I will never understand. It is all psychology. Scared money will always lose. I'm holding my tens of thousands of shares til 2020, and adding on the way. This company keeps taking steps forward, debt now cleared. No dilution, updated us to tell us we are waiting for the license to sell and hold approved patents. Even if you want to get up, wait til the flippers bring about to a $1, then sell, dont sell now, its insane.