BigBubba, I admire your enthusiasm to be great at what you do.

However, you are becoming aware of the cost to your body and mind. It's good that you are so driven, but it's not good to feel burned out at your age. There is so much ahead of you and your health is an important part of that future.

Is it worth continuing, only you can answer. Many older people have regretted not putting in the extra to achieve their goals. If you can't take a couple of days off, maybe a few hours doing something totally different could help your focus.