When I got completely burnt out after years as a CNA then as an RN I went PRN and was seriously looking for something either outside of nursing or super chill and away from people like a job with animals, etc. What ended up happening was I stumbled on a listing for a Poison Control nurse, looked into it, applied, fell in love, and the rest is history. I've never been happier and I will NEVER go back to the dog-eat-dog world of the floor ever, ever again!! !
I LOVE toxicology: it doesn't stress my body, (so no 3rd knee replacement at 40yo), I always get my lunch and bathroom breaks, the subject matter is fun, my doctors are the nicest/ humblest people you'll ever meet and they respect me, no direct (physical) patient contact (all done over the phone) yet I still get to utilize my ICU nursing knowledge and I tell doctors how to treat their patients. Yes you can have bad days like any job but the bad days at Poison Control are still 1000x better than the bad days I had on the floor. I work in an office setting and pretty much get to hang out all day with my friends, taking calls and following up to make sure the hospitals are doing what we've recommended. The patients who call us from home are much more polite than the ones on the floor and I don't have to deal with their rude family members.
Also, they send us to Toxicology conferences (on the poison center's dime!) to learn more about poisons and you get to meet other CSPIs (Certified Specialists in Poison Information) and talk to each other about your centers. I'd never flown on a commercial flight before this job and now I've been to 2 cities I never dreamed I'd get to visit. Super fun! I love poison. All that to say: If you're tired of nursing give the poison world a try and you might like it.