Most strike me as having either an INFp or Delta flavor to them. A few off the top of my head:
Beauty is in the eye of the beholder.
Confidence is key.
Hard work always pays off
What goes around comes around
Perception is reality
Where there's a will, there's a way
What doesn’t kill me will only make me stronger
Everything happens for a reason
There’s no I in Team
Time heals all wounds
Good things come to those who wait