Well i do that all the time I'll share one of my stupid decision, i bought a coin i don't went to say the name of it, and when the price was growing i was very happy and i just observed but in a moment the price was going down but with a few dollars i was in panic so i decided in that moment to sell them after that tataaaa the surprise the price was doubled after 10 minutes from my selling, i was really upset and i felt so stupid.