Should I or should I not?

It is coming to an end of my 2.1 semester of Nursing and I am so stressed out abt everything!!!  I failed my recent NSL practical test and I cannot even go for the retest last term.  I dunno what's up with me...  Stayed up all night just to practice and failed in the end!!!  URGGGGHHHHH...   THIS SUCKS!!!  I know Ms Su Fen is gonna nag at me again.  I really hope she would just shut up abt it...  FINE!!!  I am so sad and frustrated....  Can I quit nursing?  I mean I am NOT succeeding as a student nurse, how am I going to succeed as a Staff Nurse?  How am I going to reach my goal as a Nurse Clinician?