It is very difficult to predict the right time to sell your tokens. I believe this the main problem so as most often the price is rising artificially.
to sell tokens or coins you have to check the value in advance whether it is good enough and you have got the profit you have to sell, but if you have not received the benefits, you have to wait until the condition improves.
there is no movement of tokens or coins that you know so you have to monitor them frequently so that you understand the steps you have to choose.