am i destined to be a nurse?!

i always feel bad everytime something went wrong at work. i feel like im incompetent and.not meant for nursing. i graduated 2007 and never work as a nurse till 2011. i got my license as LPN on jan 2011. thats why when i started working in the hospital it was a nightmare. i had a hard time adjusting. some procedures, medicines, diseases are new to me or i just forgot about it when i was in school. i only work for 4 months in the hospital.after i got my license and went to early maternity leave. and 3 weeks ago i went back to work. now i feel like i am.back to zero back to basics. now i feel.like all the knowledge i got back when i am student are all gone. is there anyone also feels the same that i do esp to those new nurses. what i dont like is like yesterday something went wrong during my shift, some of my co nurses are talking against my back telling others what i did. i felt being discriminated and judge. i am not an.experienced nurse, everyday when i go to work is a new learning for me. now i feel like i am not destined to be a nurse. but i love what i am doing. taking care of sick people and providing them service. and we all know the fact that we get paid well. am i really destined to be a nurse?