i think the key to being happy is giving up all expectations of how your life is going to look. or maybe it's the reverse- maybe it's giving up the expectation that there's a certain way your life must look if you're to be truly happy.
either way, expectations are the problem.
i'm not rambling here. it's applicable:
i've always said i could never write a biography about a living person and i could never write about a man.