Second, find a sense of disk. The so-called sense of disk is that the market has come out of a certain form, and you can imagine the next few possibilities.
Third, find mistakes, the list you made yourself, when, what form, why you entered the market, why you lost money or made profits. If you have not experienced this painful reflection stage, your progress will be extremely slow.
Fourth, verify your own billing system. Although the copy is static verification, it needs a lot of static verification, and then start to use dynamic verification (analog disk charging) and continue to summarize.