Is nursing for me?

I have longed to be a nurse for quite a while. I struggled to get in, like many others have. I worked as a CNA (hence the name), so I thought I understood the role of a nurse from observing my former RN/LPN co-workers. Boy was I ever wrong. I am really starting to worder if I am cut out for this profession. I feel I may get burnt out on the profession shortly after graduation. I am in my third clinical rotation in an accelerated program.

Can anyone share how they determined that nursing was indeed for them? I am so frazzled that I am 25 years old, and I still dont have my life figured out. I would really appreciate any soul-searching tips, books, stories, anything.