How can I build my self confidence to communicate with high class professionals and businessmen?

-Stand front of a mirror and speak to your own-self (as oneself does never discourage it's own-self); this would help u to ensure your body language is matching your speech, hence body language sometimes over-rides your language,

-Make clean recordings of ur own speech to ensure you don't sound artificial

-Speak at ease, do not making a chain by trying to mimic someone

-You are the hero of your own stage so just appreciate yourself and step ahead

IF I HAVE SUFFICIENT CONCEPT