No, you don’t need a degree! Part of you thinks that if some authoritative “governing body” issues you a certificate then you will have permission to do what you really want to. That’s just not true.
Do you feel tempted to keep signing up for courses and programs? There is nothing wrong with being a life long learner, but do it out of sheer interest and not out of a sense of lack.
You already have everything you need to succeed.
What is needed is presence. If you can be present in all you do, and give things your full attention, you will contribute to this world in profound ways.