I can't believe I'm quoting Russell Brand here. I'm not exactly a fan but his words in the Elle Magazine interview are quite wise, to quote:
...You eventually know your place - if not in the universe, on the planet - is kind of irrelevant. So you are left with the choices. It's your smallest interactions that are very important - the way you treat the people that are around you.
...I can be quite selfish. But I feel that there are higher things; I feel there is a God, and I feel that there is a great purpose and great value in altruism and most simply, I suppose, in love.