What Are Some Remedies To Over Come Jitters?!

& self-conscious because in class there not gonna wanna work with some body who has Mild Anxiety...like it feels like acting is my callin i think about it all day but theres one problem which is like i said Mild Anxiety which causes me to some times feel umcomfortable in Public Like it feels like im going to snap or have in Out burst idk if i was having a Panick Attack..but when i was in the Barber Chair...& he had his head on my head..like i felt soo Umcomfortable like O My God Please help me its like i wanted to just jump out the Chair & say Leave me alone man stay the Hell away from Me...