I call that my 'shut down' mode. I hate it when that happens! To help me through that, my therapist has asked me to send her emails between sessions. I am rather good at putting my thoughts and emotions in writing. She said that this has helped her tremendously. It gives her a view into what is going on with me, as well as, helps her chart my progress or cycles. She prints them out and uses them when we have our sessions (in case I shut down again!)