I just think that some setbacks and obstacles in achieving one’s dreams, which make one unhappy from time to time, are necessary in order to properly appreciate what one has achieved, which in turn gives rise to a feeling of happiness. I’m not so much concerned with a gauge of happiness that could measure how happy someone is in relation to someone else, but just that you also need to know what the opposite of happiness feels like in order to realize that you are happy. If one were only happy all the time, it would probably be a boring normal state of mind.