To measure life with a ruler, which four bottom lines must be kept?

First, no matter how hard it is, it is not opportunistic. As the saying goes, heaven rewards diligence. No pains, no gains, no false space in life. Second, no matter how depressed you are, you don't belittle yourself. Some people, when they fail, complain about the injustice of fate and are devastated; When I was down and out, I complained everywhere and cried everywhere, and I was unhappy from then on. Third, no matter how hard it is, it is not a friend. The most unforgivable thing in the world is feelings. Don't treat others as fools, think about how to calculate every day. Calculation can gain a temporary advantage, but it will lose people's hearts forever. Fourth, I don't blame my family no matter how tired I am. Some people, who have been hit outside, have accumulated a lot of grievances, and then turn to vent on their families, complaining that what they say and do is always unsatisfactory. Some people, upset by the pressure of work, unconsciously point the finger at their families and complain that they can't help. Home is a harbor of happiness, but some people regard home as a trash can to vent their emotions. Show your face to your family if you are a little unhappy, and pour out all your inner unhappiness to your family.