It takes more than that. It also takes a lack of other concerns, like how you are going to pay the rent. Stress kills artistic creativity, for me at least.
Then you're not cut out to be an artist. Being an artist is the same as getting rich--you have to have the fight in you for it. The payoff is just different (usually).
It certainly requires a strong inner drive, but we don't always choose our drives. Some artists are wise and talented enough to also operate a business career, but the Van Goghs of this world don't always get to enjoy the fruits of their labors.
Mind you, I know some rich people that are so money obsessed they don't enjoy the fruits of their labors either...I'm thinking of one guy who collects fast cars but can rarely tear himself away from the office in order to drive them.
Maybe that is true for a very specific, romantic type of artist but in the general case art flourishes in societies rich enough to "humour" them. Why do you think American and Japanese art dominate the world?
