1. Do not compare your life with others. You have no idea what they have experienced and do not know all their way.
2. Do not keep negative thoughts or things you can not control. Instead invest your energy in the positive present.
3. Know your limits.
4. Do not take yourself too seriously.
5. Do not waste your precious energy on gossip.
6. More dream while awake.
7. Envy is a waste of time. You already have all you need.
8. Forget issues of the past. Do not remind your loved one of his / her mistakes of the past. This will ruin your present happiness.
9. Life is too short to waste time hating. Do not hate others.
10. No one is in charge of your happiness except you.
11. Realize that life - school, and you are here to experience it.
Problem - it's just part of the curriculum that appear and disappear like some algebra class but the lessons you learn will be remembered for a lifetime.
12. More smiles and laughter.
13. You do not have to win every argument.
14. If there is a serious problem - go to a psychologist has finally and deal with them once and for all.