Why am I always so busy?!

I have found myself asking this question so often lately. It started in late 2007 just before I had back surgery. Before the surgery I had to get all sorts of things done so that the family would be taken care of in a way that I would approve of. (Or at least in a way that I wouldn't feel quite so guilty for not being able to take care of things the way I normally do.) Then because I was recovering from surgery for several weeks I couldn't do much. When I tried to get back into the swing of things my swing was a little slower, so I fell further behind.
Now I feel like I'm on the go every day. Mondays and Fridays are for Natalie's dance. Tuesdays are Justin's scouts/Young Men activities. Wednesdays are Trevor's scout days- and now mine. Thursdays we don't have anything scheduled, but there is always a test or 2 (or more) to study for. Although I graduated from grade school many years ago I still have to study (so that I can help my children study) every time. (BTW, when did the terms for math change so dramatically? They were totally different when I was in school.) I've been told that I'm a better helper than Dad so they always want me to help them. I also get to help them with their projects. Even if Dad starts I seem to wind up doing a bunch of work too. I don't remember my mom or dad having the time to help me as much as I help my kids. Should I put my foot down or keep doing it? I'll probably just keep doing it.
On top of those things I am on the activities committee for church. We try to plan 1 activity each quarter. Doesn't seem like a lot until you realize how much work goes into planning and executing each one. And now I'm a den leader for the Wolf Den in our ward. That started just last week, but it's a bunch of work too. And I just got a new calling on Sunday and when that becomes official I can say what it is. This one shouldn't be time consuming at least.
I'll probably be slowed down a bit again for a day or two. I'm getting an injection into my SI joint on Thursday. If this is what's causing my pain now it will be a diagnosis and a treatment. And I should feel good by the weekend. Hopefully I don't have any bruising or extra pain. I'm very optimistic, so I'm sure it will all go well.
I am glad that I have the opportunity to do so many things with my kids and husband. It's good for them to see me help them, work with them, serve in my church callings and do all the other things that I do. I hope that I'm showing them a good example, and that they'll take the good and learn from it. I hope that they'll overlook the bad (because I'm just not perfect!) and see that even when I do mess up they will see how I try to fix things.