What does one do then when they just don’t care about anything anymore?

Learned how to stop being a doormat with sobriety over 15 years ago. My current life situation has changed over the course of nearly five years, that due to the changing circumstances, I am being useful in a good way. However, I have also begun to be taken advantage of as well. This is a delicate situation but one where I will ultimately have to put my foot down and make some decisions for my own well-being - health, physical, mental and emotional. Everyone involved is in some degree of denial.