For every buying or selling operation, try to create more space for the next operation. Not rushing to buy or sell can ensure a stable mentality later. Selling while rising will keep the average selling price at a high level. Even if you find an opportunity to buy it back later, you won't lose money. When buying, you need to confirm that the market cannot fall and buy above the support. This ensures that even if it falls, it will stay at the support position and have time to deal with the position in hand. Therefore, seeing that the rise and fall are just symptoms, you can give yourself room to react and adjust whether you are buying or selling, and you will not suffer a lot of losses. Only in this way can you go further and further in trading. After all, the principal is only so much.