Some good lives in the eight characters generally don't run, and yours must be yours. But luck can be changed the day after tomorrow. In other words, our overall destiny can be changed. So ancient sages taught us to accumulate virtue and do good.
For example, the wife in the eight characters is very good, which was originally the blessing of your last life. If you don't cherish your wife and bully her, even if she doesn't divorce, your family will be unhappy and unharmonious. In addition, if you do other evil things, it will also fold the blessings and shake the blessings of previous lives. Therefore, we should accumulate more virtues and do good deeds and read more Guanyin Bodhisattva.
However, if the little things get stiff, be a man and be generous. It won't affect fate.