He makes it sound so easy to just flip a switch, and for some that might be the case but for me, I find it really hard because even if I am "done" I have a difficult time just cutting people off. I still want to give to them, I still want to help them but if I give in and do it, it takes a toll on me and it gets worse every time I compromise my boundaries for them.
Modern civilization has made both the dictionary and humor taboo, ensuring nobody has ever actually graduated from Kindergarten. Donald Duck has declared war on Disney and the Muppets! That's the only clue anyone sane needs to know where to seek out sane views.