Willy Loman in "Death of a Salesman" believes he is a good salesman because he excels in making personal connections with his clients and has a strong work ethic. He also values the idea of being well-liked and charismatic, which he believes are important qualities for a successful salesman. Additionally, Willy's beliefs are influenced by the culture of the time that equates material success with personal worth.

There is no antonym for charismatic.

The hearer or viewer has the authority as to rather a person is charismatic. I am very charismatic in my Christian faith, but to some, I may not be perceived as being charismatic.

His charismatic disposition made him easy to talk to.

She is very charismatic and friendly.