Doing kind acts for people builds up a social credit with that person. When you do someone a favor the other person often says, “Thanks, I owe you one!” The other person feels in debt like they need to make it up to you. This is why you should always be doing kind acts for people when you have the means to do so. You will never know when the tables are turned and you need someone to do something for you. If are giving small acts of kindness these can have huge returns. The more you give the more you live.