What's the hell is my problem?

Well my intentions are always good, my way of following through with my own things, well that can  definitely use some work. Yesterday I had my heart set on going to work, leaving from there to go to the Donkey Farm, go to Zumba and then to the off-Wednesday crosstitch nite, well I guess two out of four isn't bad. But I really would love to be able to stick to my plans. When I got home from work I was just not in the mood nor did I have the energy to go to the DSC, I dragged my ass to Zumba, and it was hard to get through the hour, but I made it and then I was done in....and I missed going to Stitching, but I was down and out by 9:30 pm. Not sure what that is all about, but despite exercising and trying to eat right, and taking my vitamins I have no energy most of the days and it's really starting to make me mad, because I want to do things and just can't get my ass in gear for anything. :(