Where Is the End of the Road?

This is about some of my insights on life, including life values, meaning of life, life inspiration, etc. I thought: I feel that the road in this life is getting longer and longer, and it will not be short. I think it's too short. Where does the meaning of the four words "joys and sorrows" come from? The road is built by people, so it is up to people to walk on it. The horse can be led by the reins, which is the "length".