If you believe in sin and God’s judgment, living a righteous life will earn you a place in the kingdom of heaven.  If you don’t believe, you will still enjoy the best possible life on earth.  Resolve to do good and be good no matter how hard it is or how imperfectly you do it.  Remember that no effort at putting this wisdom into practice will go to waste.  There are no adverse effects from doing the right thing.  Even a little effort to avoid doing things that are considered “sins” will prevent a lot of suffering in your life.