Profit and loss are of the same origin, this word, is quite confusing. Looking back, in the field I understand, profit is far greater than loss; In areas where you don't understand, losses are far greater than profits. Therefore, the more important thing is to stick to your circle of ability. In the circle of ability, it is called the right thing; Try to improve profitability and control losses within the circle of competence, which is called doing things right. Outside the circle of ability, even if you make money, it is a blind toss, and it is meaningless in the long run.