Rule#1: be kind to others.

You never know what someone else is going through, so always try to be kind.

Rule#2: never judge a book by its cover.

Although a cliche, this is a good term to live by, you should never judge a book by a cover for various reasons.

Rule#3: no one deserves to die.

Most of the time everyone has a good intention, even if it wasn't it isn't worth killing over.

Rule#4: to be yourself.

Lots of people nowadays want to think of themselves as edgy or cool, but being yourself and kind to others will make you a lot happier in the end.