No Zdas, the number one reason for failing in business is that the new businessman cannot make a sale.
To be successful, you better be one that can close a sale, you can be one hell of an engineer and it is worth crap if you cannot bring work in.
Ask yourself: Are you fit to do the small talk, the chit chat, the lunches, the golf outings, the cold calls, the marketing, the presentations, can you convince that you are the best? can you wear a suit and tie everyday? can you switch from a follower to a leader? do you have a portfolio to present?
Can you answer typical questions (what is you turn over ratio? tell us about you change order experience, tell us about your quality control program, tell us about your Health, Safety and Environment program, are you registered? do you have written references? testimonials? has any of your projects won an award? how many registered people do you have? do you hold XYZ license in such and such states? are you certified ICC code reviewer? tell you about your sustainability approach, etc...)
First: Are you capable and ready? that's the question.