I think there are a lot of articles on the Web regarding the fear to become an entrepreneur.
Entrepreneurship fear comes from many sources but especially from:
- Not having an unique business idea
- Financial insecurity: will I make enough money?
- Fear of trying new things
- Fear of not being up to the standards
Sure, you can find a lot of documentation on the subject, and on how to handle it; my advice is simple: Give it a try!
Succint and straight to the point I guess!