Base on my research, long time holding is not give you a 100% guarantee for your investment that you can earn huge profit during selling, because how about if there is an abrupt price crash and you will not able to sell all your holding so it's result to a big loses of your investment, while even if you are going hold in short term but you will earn profit during selling is already a win situation for an investment. And also take more time to observe if your coins that you were holding was keep on rising or it suddenly falls.