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.
You need to analyze and keep working for the betterment of your knowledge, that's the tools in order to survive and earned out from this environment, people who wanted to learned more about this market should always have a good decision making whether to place an entry or keep away from any projects, you'll be able to achieved it when you have a good knowledge with the system.