Do you have a support system (friends and family as well as your doctors)? It makes me feel more alive to be around people. Just an idea.

Maybe you need to find your passion(s) (if you haven't already). That will bring you joy and purpose. Some things that make me really happy and alive are singing, dancing, talking to friends, painting, being around children, teaching, etc. I hope you find what you are looking for to ignite your passions. Best wishes!