You will feel a great fantasy when you see a kid grow up. I am not telling you to take responsibility of the kid. Just watch and enjoy. It could be your neighbor’s kid. When you observe a kid, you will see how they tasted everything on this earth. They try to taste everything first. When they grow up a little, they will like to touch first to understand. After grown up, first they will like to see. They way the learn about every details of this earth, you will see, they are working like a scientists.
For you they will bring freshness of life. If any how your mind became off, try to spend time with kids without thinking about anything else. Trust me you will feel better and will learn many things from them.