Introspection

I am sure all artists, of all kinds struggle with their own journey from time to time. I paint and or draw every day but can not find my own heart beat so to speak. Lately, all efforts, end up in some aspect of a mediocre attempt. I am starting to wonder why I do this everyday? I am very prolific so there are piles of drawings and paintings. I have a great deal of joy in the process so maybe I am looking at it all wrong? These are the things that keep me up at night. Thoughts?