I've recently picked up a book on happiness called "The Happiness Project," by Gretchen Rubin. I'm quite infatuated with what she has to write about. A very simple and easy read, Rubin breaks down the components of her life that make her happy into twelve months.
For each month, she tackles 1 aspect of her life (i.e. Marriage) and gives tips on how she was able to make it better - happier. For February (Marriage), she breaks it down as follows:
1. Quit Nagging
2. Don't expect praise or appreciation
3. Fight Right
4. No Dumping
5. Give Proofs of Love
I'm on #4 and particularly loved this bit:
"Happy people are generally more forgiving, helpful and charitable have better self-control, and are more tolerant of frustration than unhappy people, while unhappy people are more often withdrawn, defensive, antagonistic, and self-absorbed. Oscar Wilde observed, 'One is not always happy when one is good; but one is always good when one is happy.' "