There are two components that are fundamental to enjoy life and feel good about yourself: continual learning and service.
Tim FerrissExcitement is the more practical synonym for happiness, and it is precisely what you should strive to chase. It is the cure-all.
Tim FerrissAfter decades of hauling telescopes around in the back of vans and going up to high altitude locations and so forth, I did finally build an observatory, here on Sonoma mountain.
Tim Ferriss