Hey, I'm a nursing student currently. I've just been accepted into the program, and I am going to get back into CNA work. I did it for a few months a few years ago, but I ended up going back to my old job which paid more ( i'd also left school during that time). But now I'm back and I figured this is the best route, even though I do also hold my phlebotomy.
When I was a CNA before I worked in a LTC facility, on night shift, 12 hrs. It was nice, laid back, of course some elderly women did not want my providing care at first due to the fact of me being male, but once they seen my face more often things changed. Even the nurses were surprised how some of the residents had taken a liking to me, because they were " the more difficult residents ". There's going to be some things like that pop up, but just be the best CNA you can be and it'll all be alright. Respect them, and they'll respect you. A lot of my coworkers at the time would adopt the same voice you use when speaking to a child...the one with the fake, over excited tone... I just talked to them like how you would any normal person, like you should.
BTW, i'm 25 too. And good luck. I say go for it, you'll be happy you did.