From Brian Tracy:
The fifth way that you can become wealthy is you can start your own business and earn it all by yourself. Starting your own business has been and will always be the high road to becoming wealthy for most self-made millionaires. Entrepreneurship in America offers more opportunities and opens more doors than all other possibilities put together. This is why it has been said that if you have the ability to start your own business and you don’t do it, you are a fool. I’ll repeat that. If you have the ability to start your own business and you don’t do it, you’re a fool.