Being a "successful" composer

Recently, a colleague and I were discussing composition and the creative process. I was asked, "Do you consider yourself a successful composer?" and without hesitation I answered, "yes!"

Since then, I have considered this question more deeply. On what criteria can we measure our success? Is it material things like being published by Schirmer? Prizes? Financial independence? Or aesthetic things, like recognition by your colleagues, or simply being satisfied with your own work?

Are you a "successful" composer? How do you come by your answer?