This is the question everyone is stuck on. 'Im earning so much money, still I'm not happy' or 'I don't earn much so I'm not happy'; these are the statements you hear on daily basis and wonder who really is happy. Well, psychology and neuroscience give us answers about happiness. The specific hormone called 'serotonin' is responsible for our happiness in our bloodline. To produce that hormone, what you should do? Well, you don't have to strive for happiness, you need to first get satisfied by your own condition and environment to enjoy the process which is called happiness.