Take kindly the counsel of the years, gracefully surrendering the things of youth. - Max Ehrmann

Be yourself. Especially do not feign affection.
Neither be cynical about love, for in the face of all aridity and disenchantment, it is as perennial as the grass.

You are a child of the universe,
no less than the trees and the stars;
you have a right to be here.

And however much you condemn the evil in the world, remember that the world is not all evil; that somewhere children are at play, as you yourself in the old days; that women still find joy in the stalwart hearts of men;