Where is the Mommy Motivation?

I realized today that my issues isn't as much a lack of time as a lack of motivation. I have a 5 mile long to-do list with household chores, baby stuff, school stuff, etc. but I never seem to accomplish anything anymore. Today I realized that I waste a huge amount of time doing nothing. That's right, literally nothing! My husband entertained the baby today and I took an almost 3 hour nap and then when I got up I fed the baby lunch and then did nothing. Well, by nothing I mean I sat in the floor playing with the baby. I had plenty of opportunities to knock out my to-do list but I just couldn't talk myself into getting started on anything. I find myself in this same situation every weekend. Where is my mommy motivation? Monday through Wednesday I am so busy that I literally meet my husband coming and going. As soon as he gets in from work I head out to school then I get home and head straight down the hall to put the baby to bed, then I meet him heading to bed. Thursday is always wasted trying to rest up from the three previous days. You would think Friday-Sunday I could work up some energy and get some things done! Avin still doesn't sleep through the night so I find myself getting up multiple times in the night with him. Although his awake time is short it is still exhausting to constantly get up and down. I feel like motherhood is lived in 2 hour intervals. You get up in the morning, get the baby breakfast, play, within 2 hours you put him down for nap, within 2 hours he gets up, plays, you feed him lunch, the he plays, within 2 hours he's ready for nap, he gets up, plays, within 2 hours you feed him dinner, he plays, then whoa- within 3 hours it's bedtime, you put him down and then get up every 2-3 hours to feed. I find myself dragging, accomplishing less and less, looking and acting like a zombie. I need to find some mommy motivation!!! So, ladies, please, if you have the secret to Mommy Motivation please do not hesitate to leave me a comment and share. All tips on coping with sleep deprivation, actually having a clean house, a sleeping baby, and completed homework are welcome!