People can't prolong the length of life, but they can expand the width of life. Tell me your understanding of this sentence.

The original sentence is: you can't extend the length of life, but you can expand its width; You can't control the wind direction, but you can change the direction of the sail; You can't change the weather, but you can control your mood; You can't control the environment, but you can adjust your mentality.

It means: a positive attitude will bring positive results. If you keep a positive attitude, you can control the environment, otherwise the environment will control you. If you want to have a positive attitude, you must learn to think positively. People's vision and thinking are blind spots. When we see the negative side, we can't see the positive side. We should turn it to a positive position like adjusting the knob of the channel. Regular reading and positive psychological suggestion will help you have a positive attitude and help us eradicate fear and inferiority. Keep company with positive people, and you will melt like a piece of coal in a coal stove. If you are near Zhu Zhechi, you will be black, if you are near Mexico. Birds of a feather flock together.