Married for ~15, but I do not have kids. About 2 years after I dropped out of college, I got my motivation back and have worked ~65 hrs/week since then, plus spend a decent chunk of my personal time learning things online - largely personal finance, business acumen, real estate, etc. I later went back and finished my undergrad while working (more than) full time and then got my masters also while working (more than) full time about 9 years. Best sites I tell my mentees to visit to improve yourself and your own balance sheet is financialsamurai.com and mrmoneymustache.com, plus read the millionaire next door. Life changing for me. While most of my peers are spending 85-90% of their income, I am saving about 65% of my after tax earnings and investing it and as my income has continued to go up, save about 90% of the increased after tax income.
Well there you go. How much do you charge your Mentees?