There is always such an ill feeling when one makes such decisions and make moves up that huge and sometimes very fast. It has happened to everyone who has held one coin or the other at a particular time and sold. But from experience, I do not need to bother as long as I never sold in loss, the best I could do is to just be happy it never went down more. Market could go either way, so rejoice while in profit and do not bother whichever direction it moves afterwards.