In the short-term, look at the emotions; in the medium-term, look at the structure; in the long-term, look at the background;

Many times, even if you see the background and structure correctly, you still suffer in the short term because of your emotions;

If you do trend trading, then don't look at the K-line below the 4h level! The more you look, the more easily your mentality will be affected;

If you do daily trading, it's easy and happy;

If you do weekly trading, you only need to look at the market once a week;