What is the purpose of life?

The purpose of life varies from stage/phase to stage/phase of life.No need to talk about my purpose of life in my previous phase. Now I am a father and husband as well as a son of old parents. Full of responsibilities towards each of them. So, purpose of my present life is to help my child find the right path with the help of all in his life including his grandparents who are full of experience.In this process I have to make certain frequent cuts in my own enjoyment. I have to condition myself in such a way that I can enjoy what my son, wife and parents do. I have a plan to do something that keeps the memory of parents alive.