I find myself "zoning out" quite a lot and it is dissociation. My kids will ask me why I'm staring at them and I have to reply that I am looking through them, at nothing at all. I started doing this a lot this past year, because of a lot of stress. It has become quite a habit and I do it unintentionally all the time. I think it had to to with feeling overwhelmed by everything so it is a "coping" mechanism, just not necessarily a positive one at all times. I have been having a really hard time with concentration, focus, and memory. I have a hard time remembering what day it is, and I forget a lot of stuff that has to do with my kids, school activities, due dates, things they tell me. (I feel awful) I have to try to find things that keep me "present" and mindful of what is going on at the moment. It is hard. What you talked about sounded very familiar to me, just wanted you to know you aren't the only one. HUGS!