I recently came across Tim Ferris’s blog and I have no idea why I did not go looking for it before!
There are many great posts on their which would be well worth you having a look.
One for inspiration is one of the several case studies that have been done on people who are living the for and were work week lifestyle the latest one by a family with three young children. If they can do it surely you can?
How to build a high traffic blog without killing yourself (video presentation)
But I was always beware when you get into this block it can be a great distraction and stop you from achieving your goal and generally take your eye off your focus so please use sparingly and selectively.