Lack of Sleep

Why in the world does it take me sooo long to get the kids and myself in bed every night??? I start trying to get the kids in bed around 8:30pm every night, but for some reason I can't get everyone to actually settle down and get quiet until about 11pm every night! We are usually running around and busy all day. After I pick the kids up from school, I usually head to my second job, tutoring. Many times when I'm on the way home, I stop off at the grocery store, and by the time I get home it's late. Even so, it's still non-stop when I get home. I have to make sure everybody's homework is done, cook dinner, wash clothes, check email, make sure everyone has taken their medicine, give my little one a bath, and then try to find time to give myself a bath. There have even been times when we were so busy that I forgot to get my first grader to do his homework, and remember it after we have finally laid down in the bed. Then I feel like a terrible mama! Don't get me wrong, I love my boys dearly, but what I can't understand is why does it have to take a good 3 hours every night to get them to settle down and in their beds?! I'm tired! I've also noticed that the last few days my 7 yr. old has been very very irritable. He crys at the drop of a hat, and doesn't want to get up in the mornings for school. He's obviously not getting enough sleep either. Mix that with all 3 of them fussing and fighting and that equals one very exhausted mommy!!! I couldn't even take a shower tonight. I actually ended up having to step out of the shower butt naked to yell at my kids because they wouldn't stop fussing and calling my name. I hope I didn't tramatize anyone!! On top of everything else, my 15 yr. old just decided he would stop talking to me about 4 months ago. I have tried everything, punishing him, bribing him, even taking him to counseling. Nothing has worked. It's like trying to play a constant game of charades! My middle son's right behind him, at the age of 14, totally different personality though. Wow, who knew this would be so hard?? My children are my life. They are what keep me going everday, but I could definitely use a little R&R right about now!