Cant pass Pharm Entrance exam

hey everyone, so after graduating about a year and half ago and trying to get a job I finally received a called to take a pharmacology exam. So today I took the exam and I failed ( which im not surprised pharm was never my best subject ) so basically I am VERYYY upset and I feel like maybe I just don't have what it takes to be in this field ( come on pharm is a BIG deal in nursing )My confidence was totally shot down. They told me I will get 2 more chances to pass, so now I feel because I even need a 2nd chance I wont even be considered. Can anyone PLEEEZZ give me any advice on how to pass this test.