After crossing 40, the major learning of life has been “what I don’t want.”
The simple answer to that is people or environments that make you unhappy and drain your energy. Many of my friends ask me if I am rich enough to have that choice.
My short answer to this has been: In the end, it comes down to your value system. I would prefer losing a team member, customer, or acquaintance than living constantly in stress and ending up paying a cardiologist for angioplasty or a hair transplant.
Our defined, allocated time on this planet is limited. It is on us to decide how to use it. Short-term profit leading to long-term suffering should not be an option.