I think happiness is kinda fleeting, it is lasting peace I think most of us want. No thing or no person can really "make" you happy, even if it feels that way for a few moments. Happiness and more importantly peace, need to come from one's self, when you are comfortable in your own life and you aren't looking for something else outside of yourself is probably a good indicator that you're happy in your life. 
It takes work and lots of mistakes. I speak from experience in looking for happiness outside of myself too often in life.

It takes work and lots of mistakes. I speak from experience in looking for happiness outside of myself too often in life.