Uber - you might be interested in listening to these recordings done by Marci Shimoff & Paul Scheele. She has a great way of describing happiness where it becomes similar to the joy expression you described - where you can find happiness regardless of life's circumstances. You still feel life's pains, but you're able to see the beauty in them and not let them take you over. The book and audiobook, and paraliminal of Happy For No Reason are also really good.
(the mp3 download for the fourth session does work even if it is mostly off the frame - at least that's how it looks on my computer.) Marci Shimoff - Keynote Speaker & Author