I hear your struggle.
My mentality is that if I'm resting, somebody else is working. I take 1 rest day every couple of weeks my body is beyond exhaustion. I struggle to get it in to my head sometimes that my body needs rest.
I know how it works and what it's capable of, so I know what It is I am doing, but with that I do know that sometimes I DO need to rest. It's a learning curve I think buddy. And to me, it isn't an easy one, and never has been.
Sometimes a sickening work ethic comes at a price!