I have a side business mowing fields. I love it, but over the last 7 years have really developed a strong reaction to poison ivy and poison oak. I cut field for three customers on the end of a cul-de-sac and it was a pretty good gig. The fields were tough (steep!!!!), but 3 clients next door to each other on the same cut schedule was nice. Nice enough folks, but knew they had a tough location. The poison ivy just got worse and worse until I spent an entire summer on prednisone. Really messed up my hormone balance and I'm still battling it.
So I told them all that I was sorry. I finished the season in 2022 and said this was it. Told them in detail why I had to drop them, but even so, they called and offered more money. I eventually had to stop answering their calls. At one point I offered to sell them my equipment.
Sometimes its not easy but sometimes you need to drop the customer and tell them the truth.