build my self confidence

I have the strangest thing, ok I have a strangest thing, ok im not scared around the opposite sex and not afraid of rejection thats all cool god knows ive been rejected before. Im not afraid to inroduce myself, infact im considerd outgoing by 99.9% of people I know and im described as have pretty good self confidence but the thing is when I meet high level business people my confidence drops like a ton of bricks out of the empire state building. what the heck? but only around certain ones like I talked with the vice president of the inland northwest bank without trouble, and so and so forth but around certain ones I get scared even though there really nice.