Would you believe that the keys to living a happy life include these happy chemicals, serotonin, dopamine, endorphins and oxytocin the mood stabilizer, the reward chemical, the painkiller and the love hormone. Just these four chemicals are the reasons why some people free base crack. The reason why you're listening to this post. The reason why you're happy when you get that notification. The reason why you feel so loved and appreciated as a human being