Uneasiness

Felt kind of uneasy as I am starting my job tonight. Yes, its night shift, which is something similar to guard duty less the ammunitions. Being assigned to the Emergency Department aka A&E, I am worried I may not deliver it correctly. What if there's emergency cases? what if I cannot react to the situation? What if I've done something wrong? Dun worry, I'll tell myself, "I can do it" 100 times - That's exegerating. Well, I need to rest and prepare for the night. Everything would be fine.