Detaching is hard and i have a hard time staying detached, especially living under the same roof. Here are some more tips on detaching........ --DETACH.
Believe none of what he or she says and half of what he/she does.
Have NO EXPECTATIONS.
Take care of yourself, breathe, eat, sleep, exercise.
Take the parts of this advice that you need and don't worry if I have repeated something that you have already done.