I think transition will affect it to this end: if you wind up feeling better about yourself, that translates into being more confident, and confident persons give better interviews. That's a pretty awesome power to be bringing, for sure on that.
But, nothing beats having been successful doing it. It says (in crayon cause they won't give us anything sharper) at the Fillmore 'you don't get trained here, you get here trained.' And in my office the sign reads, "in theory there is no difference between theory and practice, in practice, there is." (Which I think is Yogi Berra, or it should be.)
But confidence is very sexy, and very persuasive.