Losing My Mind

I don't know what to do with myself. I need a new career path but I just cannot decide on one. I know that I do not want to do this for the rest of my life. I have my interview for nursing program next week but the more I obsess over it, the more I think that I would be a lousy nurse. I think that I would not even make it through the first week on the job...I would be cowering in a stairwell sobbing my eyes out from the stress. You have to have a tough skin and a very decisive attitude to be a nurse. Now really, who would want me as a nurse? I know I am supposed to be practicing positive self talk right now, but still...I think I would break down from the stress. I am not sure if I would ever grow to the point of being good at it. I am so scared that I will actually get into the program and then waste a year of school and money on the BSN and then get a job that I really despise.
All I want to do is escape my boredom or is my boredom borne from within my brain? Do I cause my own boredom? Shouldn't I just be happy to have a job? I think I have covered this before on here. Bottom line, for my personality, I cannot continue to drag myself to a job that does nothing for me everyday. It is just a dead end street. But where do I go from here? Should I instead go for sonography? But wouldn't that be the same ol' thing every day? Not really...I would be seeing different things all the time. OH FOR THE LOVE OF PETE. I just want to slightly enjoy work.
Here it comes...that feeling of wanting to run away.
I am a nutcase.