Every Ever since the sixth grade, I've dreamed dreamt of working in the medical field and caring for people.
"Dreamed" and "dreamt" can be used interchangeably, but my personal preference is for dreamt. (You, of course, may use whichever term you wish).
Despite Dumi's correction, I believe that your original use of "I've" rather than just "I" is correct and that it is best not to change it.
This ultimate drive ledhas ultimately driven me to pursepursue a career in nursing.
I recently cared for my aunt who had numerous strokes and was disabledisabled.
She was also a registered nurse and was deceasedpassed away January 2012.
Saying that someone "passed away" has a more positive connotation than "was deceased."
Also, the statement is unclear. One interpretation is the one that Dumi offered that states that "She too was a registered nurse." This statement indicates that your Aunt, like you, is a registered nurse. Since this appears to be an application for nursing school, I suspect that you are not a nurse yet and that this statement would therefore be inaccurate. I would consider re-writing the entire sentence to say "My Aunt was a registered nurse, but sadly she passed away in January 2012."
My goal is to graduate from the University of South Alabama, and work at the Biloxi Medical Regional Center as a postpardumpostpartum nurse.