I am like this too.
I'll tell you this, you have to keep fighting it or you will end up locked up in your house. (it's hereditary,, my mother can't drive up any hill... so she's stuck in her subdivision!!! )

I feel it particularly now, since I haven't been riding much all winter... Instead of looking forward to riding, I am dreading it. Once I get on the bike, I do have fun..
but man.. You are not alone. And yes, there is medication you can take for it, but I don't want to do that!