I don't drink much and I smoke very little. I guess my only bad habit is robbing banks. Now you see, fellas, I ain't such a bad guy at heart.
I think to always treat others as you would want to be treated yourself and treat every single person with the same amount of respect. It's not often you see it, but sometimes you meet someone who is not very nice to their peers. But when you do, it's a massive lesson in treating everybody with respect.