Doing the Right thing...

Why do so many people struggle with doing the right thing? I guess that there are so many definitions on what is "right". My high school football coach, Hal Capps, always preached to us to do the right thing. Pushing in your cart at walmart, cleaning your room without your parents telling you to, or picking up trash when you see it.
Now my life has transitioned to doing the right hing with my children. Having a 2 year old and a 1 month old. Now its doing the right thing for time-outs, not yelling, too much tv. etc.