In the stock market, the most taboo in stock trading is "greed" and "unstable mentality". As the saying goes, you can't walk by the river without wet shoes. This may also be one of the reasons why there are some simple truths in the stock market, but not many people really do it. What's more, the operation in the stock market is good, and the analysis software is only an auxiliary tool. You need to have a good attitude+experience (skill)+luck. Only with a good attitude can we calmly judge whether the operation is correct or not and avoid chasing up and down. It is better to sell well than to buy well. Only spare money can be used to buy stocks, so that the mentality will not be easily disturbed by the ups and downs of the stock market, maintain a good mentality, observe calmly, and step on the market rhythm. If you put all your money into the stock market, or even finance the stock market, then the stock market will become a gamble, and it will be difficult to maintain a good attitude, and then there will be the operation of chasing up and down, stepping on the wrong rhythm. It is normal for stocks to go up and down, which is the law of the market. If it rises too much, it will fall and adjust, and if it falls too much, it will rebound and rise. Try not to be overjoyed for the sake of rising, and not to be sad for the sake of falling. This is what stock speculators need to do most.