I can say without the slightest hesitancy that the number one asset of a very good salesperson is summed up in one single word: confidence.
Strangely enough, it is not an inborn skill, but a learned one and the strange part is that so few really learn it, and it is something that every single salesperson needs.
The other thing I learned about this from all these years is that the method to achieve confidence can be summed up in one word: boldness. If one has a degree of boldness, one will try things that others shy away from. Boldness then will create the willingness to try and do and learn from trial and error, and the results of that activity will help build confidence.
It doesn’t require any more intelligence than good common sense would dictate, what being good at sales requires is desire, a willingness to put yourself out there, learn from trying and doing and failing and succeeding, and improving to the point of being confident in one’s ability to succeed.
That’s as simple as it gets. All the rest is sharpening the saw and lubricating the parts.