How hard can becoming a cna really be?

Not trying to belittle the career I’m considering going into a program to learn all this stuff now that I’m out of high school. But I mean how hard can this be to get into from the surface cleaning bedpans, help wiping, help patients eating, and other tasks that at least good days you have to do sounds pretty easy for the most part. Do you have to study a lot?, Is it mentally draining, and also will this be a hard thing to get into considering I’ve never really shown interest in this type of work until a couple months ago.

Pretty curious to see if I can make this a starting point in a career path and would like to hear any info, tips, advice, experiences, etc