Entrepreneurs are leaders in their own sort of way. Starting a Startup is only half the battle. The other half is making it successful which by no means is an easy feat. An idea can be fun, but running with it poses its own challenges.
Interestingly, as this Infographic indicates, it takes a certain kind of personality to be successful in a Startup environment and even though this statistics are from 2009, I think they hold true to this date.
Take a look at these Entrepreneurial styles Infographic and see where do you fit in?