nerve

Im gonna be appearing for several interviews/counselling soon for several colleges.. and let me tell you, im an absolute NOOB at this I always tend to break my nerve at the most important time :( Any advice regarding this ? ThaNKS in advance

I have Archos 5 imt.250gb Now i need your help Should i go 4 ibasso t4,linearossa w1 or samson s amp or fiio e5 4 amps And between koss porta pro or hd201,ear pollution nerve pipe The decision is on 1.bass 2.warmth amd depth 3.battery consumPtion