Can I make it in showbiz if I can't even leave a voice-mail greeting?

[VenusNUranusaMse]

I choke up and when I try to leave a voice-mail greeting in case i get a missed call. If I do leave a full message my voice is usually shaky. I quit college because of the oral presentations. Most other students just tried to have fun but they always had this "cmon you can do it" vibe to them. That's what gets me most of the time. For instance if I shouted: "Shut the phukk up" while in front of the class, I would apologize but still be left with the OOMPH! from the shock I caused. Then I would get better grades in the class that even the professor himself would say: 'enough'.
By the rant I just made you can tell I have a lot of entertaining material.
So how do I hypnotize myself into being star I am in my dreams?