We use the same internal stress response to stress about rent you're not sure you can make as we do to stress out about a lion stalking you. Robert Sapolsky makes the case that this actually ends up having an even worse impact on your health in his book Why Zebras Don't Get Ulcers
You police officer can't be stressed, an EMT has a more stressful job.
You EMT can't be stressed, an ER doctor has a more stressful job.
You ER doctor can't be stressed, a cobalt miner has a more stressful job.
There's always somebody worse off. It doesn't mean your stress isn't real.
Stress, burnout, any mental condition isn't relative. It doesn't matter if you're not able to deal with what you're dealing with. For whatever reason.