The principles of trading are three points: accompany time, use data as your eyes, and let emotions guide you. Popularity is merely a tool for harvesting retail investors; when everyone is optimistic, that is the most dangerous moment. Do you think it is safe when no one believes in it? That is a big mistake. True safety is when everyone maintains a balanced attitude, and no one is discussing it fervently; that is the time of safety. Moreover, the most important point in trading is to learn to go with the trend!