For straight billable work, I am working 20-25 hours a week. But I am still putting in 40+ hours a week overall when you include all the non-billable stuff. I have been doing this for 4 years, and still need to learn to balance this better. I am slowly getting my subcontracting and things worked out though. But that 4 hour work week sounds so nice.
I better get my act together soon though. I have a baby on the way and I'll really need to figure out how to balance it all much better by May. Time is running out. LOL

Megan