I'm having the same issue I think, I work 5 days a week at a grocery store and have for 4 1/2 years now. Lately I'm seriously hating people and honestly dread dealing with customers, even nice ones (which most of them are).
For me, I'm trying to take a mini vacation every 3 or so months. 4 or 5 days of no socializing and resting and relaxing. My therapist and I decided that is worth trying to see if it improves my work performance and keeps me from getting burnt out as bad.
I had some really bad burnout earlier this year, when my store was doing a remodel. All the extra noise and activity had me in constant sensory overload, and I was exhausted all the time. Even sitting at my desk at home was exhausting. I had to sleep a lot.
I did give myself a lot of extra rest and stuff where possible, and asked for official work accommodations such as extra breaks when needed.
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ASD level 1, ADHD-C, most likely have dyscalculia & BPD as well.
RAADs: 104 | ASQ: 30 | Aspie Quiz: 116/200 (84% probability of being atypical)
Also diagnosed with: seasonal depression, anxiety, OCD