I just came in from soaking up some rays, blowing bubbles, and reading The Happiness Project. I'm loving the book, it's got lots of great tips on increasing your happiness, no matter if your happy now or sad.
And yes, seriously I was blowing bubbles, they are beautiful when the sun light strikes them as they glisten and float away. I find them to be very meditative. I loved bubbles as a child so why shouldn't I enjoy them now? What things from childhood do you still enjoy?
(the image is called "Bubble Rain" by Steve Jurvetson)