Burnt out, where can I go for less stress?

TLDR; Tired of being screamed at in customer service roles, seeking less stressful alternatives.

I've been in customer service in high stress jobs for over a decade. First as a catering manager, then a lead/Supervisor at TSA, and now I'm a lead at the Metropolitan Council street division. Getting screamed at by angry clients/customers/passengers day in and day out for going on 11 years has given me a bone deep weariness.

What are some alternatives? I'm finishing up a degree in Communications, was thinking of pursuing an MBA. I wanted to teach English overseas but planning for retirement with those types of jobs is difficult. Are there any roles I can go into with this type of experience that won't have me feeling like a punching bag? I wouldn't mind administrative work; I've had to do paper work, scheduling, etc at all of these jobs so I'm used to it. L I just want something less mentally taxing...