Failed at Being Superwoman

Here it is 3 days before Christmas and I feel like the biggest failure.  This is the time of year when you're supposed to be happy and cheerful and I just can't do it today.  I had to tell my son's that I couldn't be their secretary anymore.  I just can't do a 40-hour a week job with the other jobs that I have.  I feel like I've totally let them down.  They were so gracious about it, but as a mom I guess I feel like I should be able to do it all and I just can't.  I've failed at being superwoman!  I can no longer stake a claim to that name.  I guess I'm getting old or something!!