Well, all I can say to that is that I took profits in 2014. And regretted it for a long time. The thing to do, in my opinion, is learn about Bitcoin. There are tons of resources out there from books, articles, videos, podcasts, etc. Once you get proper perspective, the smart move is Hold On for Dear Life. Maybe sell a little bit as it goes up if you want, but always have a core position. Same thing as the people who held onto their Apple, Google, Amazon shares etc... The ones who took profits early are the ones who are crying now.