We make a life what we give. What does it means ?

Suppose someone is in need of something and you thought to give him that thing right. The thing we get return is smile on that person face. As we know smile is most expensive things on earth. Smile is one thing which only satification can give. You have given him that thing which he needed now a positive environment, when some other person will in need and ask that person to help him out he will also help that person. Do to your helping nature a postive chain of helping pepole is making.