Tom, my example is probably at the very simple end of the spectrum, but through blogging and book writing, I've helped thousands of people enjoy the outdoors which can have incredible benefits for mental and physical health. Personally, I get plenty of sleep, exercise at least an hour a day (if you count walking), eat mostly vegetarian + fish, go hiking, camping, and trail running as often as I can, drink lots of tea, etc.
I enjoy reading about the singularity, cybernetics, and futurism in general.