If that were true, you'd have to explain how they got the self-esteem issues in the first place if there wasn't discrimination.
FWIW, I have known a lot of people in sales and it's not confidence that makes you good - that's just a stereotype - but the ability to make the other person feel like you have their interest in mind. Sure you have to be willing to approach someone but without the ability to establish a connection, the confidence would be misplaced. It also seems like anyone can train themselves out of cold call anxiety.
FWIW, I have known a lot of people in sales and it's not confidence that makes you good - that's just a stereotype - but the ability to make the other person feel like you have their interest in mind. Sure you have to be willing to approach someone but without the ability to establish a connection, the confidence would be misplaced. It also seems like anyone can train themselves out of cold call anxiety.