You really should check out George Saunders' wonderful convocation speech found via a sharing friend on Facebook. Here's a taste:
So here’s something I know to be true, although it’s a little corny, and I don’t quite know what to do with it:
What I regret most in my life are failures of kindness.
Those moments when another human being was there, in front of me, suffering, and I responded…sensibly. Reservedly. Mildly.
Or, to look at it from the other end of the telescope: Who, in your life, do you remember most fondly, with the most undeniable feelings of warmth?
Those who were kindest to you, I bet.
It’s a little facile, maybe, and certainly hard to implement, but I’d say, as a goal in life, you could do worse than: Try to be kinder.