nuff

    Ninety-four percent of professional workers put in 50 or more hours, and nearly half work 65 or above.

This sounds crazy exaggerated without any citation. According to wiki, "According to the Bureau of Labor Statistics, the average non-farm private sector employee worked 34.5 hours per week as of June 2012."

EDIT: reference.. http://www.bls.gov/news.release/empsit.t18.htm

I started consulting about 2 years back. The most important thing I have learned is Cash Flow management. Always keep in mind the 'earned money' is going to be in your bank account for a while. Sometimes for over a month. Make sure you stay afloat.