What are the educational requirements? Where do you go to school? Is it a very stressful job?

I don't know that I am a suitable candidate to even consider this field. I am an RN (BS in Nursing) and have been on disability for four years due to depression, Benign Essential Tremor, and mainly difficulties in cognition and memory. I am doing much better now, my OSA is not yet completely treated but I have a good Doc working with me. I am on Aricept now which has improved my cognition and memory.
I need a job with acceptable levels of stress ( the responsibilities as an RN are too stressful for me).
I feel capable of trying something new now, but don't know if I feel that way because of the time off work on disability or treatment for my OSA and cognition problems.

Any PSGTs out there that can tell me how hard your job is?

Thanks,
Mary