Maybe call Dr. Phil?
LOL.
I've heard and seen this lack of desire you talk about before. Not sure what it is or what happens. All I know is I hope I never get it. The month leading to bowseason you just about have to tie me to a chair I'm so pumped up to get in the woods. I'm like that every single time I go out (for the last 20 years) whether I'm seeing deer or not.