Joy is an action YOU take. Choose joy and you will feel joyous even just in making this choice. As life happens you have the freedom to choose how you act and react.
Choose joy as your modus operandi and see for yourself, your world will transform. The people, opportunities, places, experiences you will be presented to be a part of will enhance your joy.
You just have to activate it for your self and consciously choose joyful acts and actions no matter what occurs in your sphere. Very soon, in no time at all, what occurs will automatically multiply your joy.