Bear with me no swipe at you. It's a while so after the quote I'm doing it on memory but I think it's accurate.
"In 1988 Barlow Clowes crashed after it emerged that chairman Peter Clowes and his associates had misappropriated in excess of £100m from small private and older investors who were believed they were investing in government securities. Clowes was imprisoned for his actions."
In misappropriation terms it had been very successful because he kept the interest rate (detail not necessary) a little better - not much better which would have aroused suspicion.
While Mr Clowes was in prison it was discovered that he was working out plans to do something similar on release. The reason? He enjoyed doing it first and it made money second. It's a well known fact. As is the fact that making money is rather more difficult if that's your primary goal.
SUGGESTION
Find something you like then see if you can make money out of it.
Were you by any chance the person I suggested should take a calculated risk on advertising and not a gamble...
:-)