Hedonic uninterrupted...

Let us look at "hedonic adaptation" -- the brain's natural dimming effect, which guarantees that a new house won't generate the same pleasure a year after its purchase and the thrill of having a boyfriend will ebb as you get used to being part of a couple. Happy people are wise to this, which is why they keep their lives full of novelty, even if it's just trying a new activity (diving, yoga) or putting a new spin on an old favorite (kundalini instead of vinyasa).