You said you need to slap the weakness out of you. He's asking if you consider doubts a weakness.
Personally I'd say no, but it's important to be confident; confidence is attractive and also the key to success in any social venture
That being said, 99% of people are not nearly as confident as they appear: wanna know their secret?
FAKE IT.
Just because you feel like you won't succeed, doesn't mean you have to act by those feelings. Focus on the positive outcomes, and walk like you own the place.