Self-worth, delusion, and other aspects of how an artist presents herself is essential to any artists’ career. Enthusiasm is a big part of the puzzle to learn how to make contacts and influence people.
The idea of “believing in yourself” has a different meaning for artists, because it is not initially about self-esteem or confidence, even with psychological issues aside, artists tend to have one thing in common. It is a belief in something they do, however small or large – and that is what makes an artist different from every other professional. For some it starts in childhood, but either way, the seed is always there. Then the belief has to be nurtured to some degree, by a parent, or a teacher, or a friend, and then you learn to nurture it yourself by making more art and exploring more ideas, in most cases. So this process of “believing in yourself” to me, means to keep working in the studio or wherever you work, because the art is the center of it all of course. If you do too much “business” or “networking” you will lose studio time and a balance is necessary. The center is always the studio.
The idea of the “artfully constructed personality” is not always as cold as it sounds. Andy Warhol might have been an example of a certain ‘atsy’ self-consciousness about how he appears and acts in public. Dali and others were performers in that sense as well, but Warhol seemed to play up his ability to bore rather than entertain. Another example of an artfully constructed personality is Lady Gaga the performer who once said that Stephanie Germonatta (her real name) could never be as bold and do the things Lady Gaga does.
I mention these examples to say you can take “believing in yourself” to another level as well, and construct an artful approach to dress, manner of speech, and ambitions. It would be perfect for experimenting with while networking and meeting people, but of course you already have your own style, it’s just a matter of doing it more and trying new approaches.