Human beings are advanced animals in the world. Some animals are very kind. For example , if you are kind to a dog , it will shake. It will tail to you. So if you are kind to others, they will also be kind to you.
You have lots of chances to give your small kindness if you see a disabled person working in the street. You can help him to cross the street. If you meet a stranger, you can show him the way. If he or she asks you questions, you should be kind to answer them. That is you give small kindness to others. Maybe it seems to you a piece of cake, but it is very important to people in need. If you do this, the others will do it to you.
Be kind to others, and they will be kind to you.