If you do right you'll be rewarded in this life: others will respect you, aid you and generally do good things for you - and feel bad if they don't.
You can't totally get away with wrong. At the very least you know it's wrong, and that will injure you.
Doing right is usually the easiest way in the end. Doing wrong usually ends in making you unhappy. That's one of the easiest ways to tell it's wrong.
So you do right because it really benefits you. As I just asked MineralMan what makes something right or wrong? If not God soceity?