I like the concept of the path to happiness bringing happiness, as opposed to the result doing so. It brings me back to the concept of the happiness baseline in psychology suggesting that we all have a set point we keep returning to, amidst the fluctuations of life (highs and lows).
Fulfillment is interesting because it’s more derived from effort, I think. It focuses on the concept of intrinsic vs. extrinsic rewards. Things we achieved based on our hard work make us more fulfilled (the journey).
Bertolt Brecht put it nicely: “Everyone chases after happiness, not noticing that happiness is at their heels.”