Why it it I can't say "NO!"

So I took Jacob, my Bible and some school work (just in case I had plenty of time to kill) to Jacobs first Scout meeting. The Bible never go opened, forget the school work, instead, I volunteered to be a den leader. What was I thinking? I guess I thought if I didn't do it, who would?  Do you ever feel that way? Tell me how  you say "NO!" Don't get me wrong. I will enjoy being a leader. I will put my best foot forward, (some say I am an over achiever) and it will be a good year. But I was looking forward to dropping Jacob off, going back into the car and spending time with my Lord. I guess we will spend time together in the morning, before the kids wake up. Shhhhh....Don't tell them of my plans. Or they will wonder if they are missing out and wake up early with me. :)