Not Myself

Tonight I had a meeting for my Room Reps for PTA and I was talking to the Room Dad and he made the comment tonight that I am just not my go getter self lately. I am feeling that too I and I don't quite know how to get out of the funk I am in.
I have always been involved in 200 things at once, and right now, I am not, yet I don't feel like I can accomplish even one thing. It is not even the physical exhaustion that I am fighting. I am always tired, that is what happens when you become a mom... I am mentally scattered. I honestly don't know what to do... HELP... I am ready for any suggestions. Maybe once the boys are back in school I will feel more involved and more motivated... What do you think?