I had 4 Rules for my students and I think they work for all of us:
1) Respect Yourself and others.
-If you respect yourself, you have no reason to disrespect others.
(Yes, most of us have been disrespected by others, but if YOU want to BE HAPPY, LET IT GO!)
BECAUSE OF THIS, I have since added this rule:
FORGIVE YOURSELF AND OTHERS.
2) Be here; be on time.
-You won't miss anything & you show respect to the rest of the group (whether they be family, friends or co-workers)
3) Give 100%; TRY, TRY and TRY.
-You'll always know you did your best and you won't go through life with regrets.