What is the enlightenment to life from the perspective of development?

I think there are the following points:

1. The essence of development is that new things replace old things. We should bring forth the old and bring forth the new and constantly absorb new knowledge and ideas.

Second, development is the unity of progressiveness and stumbling. We should correctly treat the setbacks on the road of growth. As long as we work hard, we will always be faithful wives. Third, the development of things will go through the process from small to large, from strong to weak, and we must constantly strive to make ourselves stronger. Fourth, things are constantly changing and developing. On the road of life, we should be humble and calm, and face the gains and losses with a normal heart. There are many reasons for us to discuss.