Where does entrepreneurial spirit come from?

Fresh ideas sign in the skyI am currently editing an article on what  makes a successful entrepreneur and it has got me thinking. I think of myself as an entrepreneur – I have ideas, I am confident, I can spot opportunities, I will take calculated risks and I aim high.

From what the expert entrepreneur coach I am working with has said, these are all key characteristics of an entrepreneur. But I have my failings too and these sometimes get in my way.  By that I mean I have a severe fear of failure (another entrepreneurial characteristic), I don’t always follow through (classic entrepreneur trait and a bit too honest perhaps) and I don’t always view my ideas that objectively.

So am I an entrepreneur or not?
Do I have what it takes to be a real entrepreneur, a successful entrepreneur? Some times I say “YES, of course I do!” Others I’m not so sure and my little mind squeak goes “Who do you think you are kidding!?”

So what I want to know is what do you think makes a successful entrepreneur and what do you think the most common challenges are that entrepreneurs face?

Or in other words where does our entrepreneurial spirit come from.  But more importantly where do entrepreneurs fall down and fail to turn their spirit into success?