"Life is like a fallen leaf, it falls as soon as it falls, and it falls as soon as it falls." What do you mean?

In fact, this sentence means that a person's life is like a fallen leaf, which falls only once in his life, and once it falls is a lifetime. Life is too short. If you carry too much, it will be difficult to pursue and you will be disappointed. If you live, there will be trouble in the world. No one is perfect. Look at other people's mistakes, think about your own mistakes and forgive others' difficulties. The weaker people are, the less harm they do. The wider a person is, the happier he will be.