Religion affects the lives of its followers by...

1. Understanding of Life

1.1. The Four Noble Truth

1.1.1. There are rules but if you follow them then you live peacfully

2. Moral code

2.1. The Ten Commandments

2.1.1. There are multiple rules to make your life nice, and other lives around you nice. Like "you shall not kill."

3. Sense of Belonging

3.1. New Testament