I guess this means money can buy happiness ... at work.
You have to earn 2.5x as much to be as happy working for someone else as you would be working for yourself....
This is consistent with the one undisputed finding in all the research on entrepreneurship: people who work for themselves are far happier than the rest of us. Shane says that the average person would have to earn two and a half times as much to be as happy working for someone else as he would be working for himself.
Happily read the full story (for yourself) at Bakadesuyo.