Don't worry about what other people think. Do what you know is best.
Don't fret on the things you don't have. Be glad for the things you do have.
Don't make everything a competition. Start competing with yourself.
When things go wrong, remember when they were right.
If you don't believe in yourself, no one else will either.
Everything happens for a reason, whether that reason presents itself now, or 10 years down the road.
Don't worry; Be happy.
and Let It Be.