everyone has some good advice. I had to learn fast how to manage everything, my DH could only be home for 2 days. Here's my addition: the egg timer. LOL I even use it to limit my time on the computer. They are cheap to get if you don't have one, I like it cause its portable. Otherwise you can also use an oven timer etc. Set it for 5, 10 or 15 min, and then clean. Pick up everything you see and put it back, work as fast as you can for that time, and then STOP. You will feel better you got SOMETHING cleaned, and it will really help. You can even do this a few times a day.
Especially with a newborn, but even now, I think if I only get one thing cleaned/washed per day, then I accomplished something. I focus on one room per day of the week (except weekends). And work on one thing at a time in it.
I learned a lot from flylady too. Check it out, like the PP said. Its pretty A-type personality IMO.