Mouse, a lot (for me) has to do with "focus." If you're looking at the other person/the situation then you can remain stuck but if you are looking at the "walk away" then you can't see the person/situation anymore. We can only "do"/think one thing at a time, there is no true multi-tasking, only really fast sequential-tasking :-) So, if you face away from whatever is "unhealthy," you'll notice something else. Maybe in therapy you've noticed that you have multiple "entry" points/problems and if you work on one the others get better too when the one gets better or if you get stuck you can put one down and try another? The "sleep on it" idea works that way too; just "drop" whatever it is that's frustrating and pick up something else that looks smaller/easier. It's all a giant jigsaw puzzle :-)