How to leave a job due to the mental stress and affect having to physical health?

My job has an extremely high turnover rate, it is my first salaries job with amazing benefits. The workload is so stressful I even took some days off and can’t really feel like I’m “off” because my anxiety keeps eating away at me. I can no longer handle this, I feel like I’m going to have to completely step down and possibly have to cut my pay in half if I do look for a job elsewhere, but I don’t know how to say “I can’t take it anymore” so it won’t affect my recommendations for future jobs

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