You are not right. The difference between rich and poor is not in knowledge when to sell in order to earn more, but in knowledge in which project to invest. After all, some projects do not make a profit at all, but only bring losses.
In order to make the right choice of a project for investment now, it is necessary to carry out a tremendous work on its analysis.
I have repeatedly been convinced that there is no complete guarantee that the project will indeed be full and promising in the future, If you Study all the information and make sure that it is correct and correct. I would also carefully study the information about the developers and the very idea of the project, how much it will be in demand in society.