Work as a saleman sometimes. I try to be cool af all day, but sometimes customers come in and are stressed as hell.
Stress is contagius, and i have promised myself too minimize stress after some health issues.
I just take a deep breath, put on my most charming smile and say. (To myself, but adressing it to the customer)
“No need for you too stress, im in here all day”
Works like a charm.