Read an interview with Dylan once. reporter asked him if was happy. I'm paraphrasing here, but his basic answer was:

"It's an irrelevant question. Anybody can be happy if they want to. There are drugs that can make you happy. The better question to ask is 'Are you blessed?'"

As I recall, he raised the question but didn't asnwer it in that interview, but I think he likely has been abundantly blessed with talent and recognition thereof.

-MW