A study of business school graduates tracked the careers of 1,500 MBAs, from 1960 to 1980. From the beginning, the graduates were grouped into two categories:
After twenty years there were 101 millionaires in the group. The clincher: only 1 of the millionaires (one!) came from the "money-now" group, and 100 came from the "passion-now" group. The study’s author Srully Blotnick, concluded that "the overwhelming majority of people who have become wealthy have become so thanks to work they found profoundly absorbing…Their 'luck' arose from the accidental dedication they had to an area they enjoyed."
Source: Making a Life, Making a Living by Mark Albion, p. 17