How hard is it to get your RN (registered nurse)?

Im planning on becoming a CNA (certified nursing assistant) (start the 2 part course in the fall, takes about a year), then a year of gerenal classes to prep me for nursing school, then devote 2 years to the RN (registered nurse) program. I would like to know how difficult it is, and if getting my CNA will help me at all.

View this post on my blog: http://travelnursesuccess.com/how-hard-is-it-to-get-your-rn-registered-nurse