I got accepted into CNA for my senior but im currently enrolled in a blue collar class

Hey my name is D'Lila and I grew up turning wrenches on trucks, cars, ATV's, UTV's etc. So of course I took that at a trade school my junior of high school (thats currently my grade still). At my job that I work at theres a girl who works at a hospital as a nurse. She tells me all these stories and it just makes me so happy listening to them. From what everything she has said during those stories and describing the job I would love to do it! Ive wanted to go into the Healthcare field since I've been little, but my question to you guys is should I continue with my diesel class for my senior year or go with my heart and do CNA?

My diesel teacher is okay with me switching for next year, but I just feel so bad for leaving him because he's like my best friend