It is said that the key to happiness is to find purpose in your life. The way to happiness lies in knowing and loving what you do. Those who have a passion for what they do, whether it is a hobby or a work, will enjoy their days more and will be happier for it. This is what makes life worth living. Ultimately, the key to happiness is to find what makes you happy. Once you know what it is, you can move forward in your life..