Why do we choose sadness over happiness, when we are hurting? answer is simple, because every other emotion just feels wrong, depending upon how well you can lie to yourself and convince yourself to feel happy again. But if you want to heal your wounds, Let sadness take its course. It helps you recognize your faults and make peace with your inner self, let it take its time and when the time is right you shall feel happy again, most importantly in control and satisfied.