Milkbone,
I can really relate to losing motivation and mojo. I find that when that happens, I have to find the joy in riding again. How to do that is a personal journey, I believe. Personally. when I am trying to get back my joy I disregard the speed and the distance and focus on going some place beautiful, often with a friend or riding buddy. My goal becomes "to have fun." Hope you find your way back to the joy soon.