Treehouse,
Why do you assume that he rescheduled some clients for friday but not you? Maybe he did maybe he didn't. In your post it sounds like you are using that information to put yourself down, to make yourself feel less than others.

I get this line of thought...I do it to myself all the time. Sometimes it is good for me to challenge the deeper assumption that it is based one. Often when I do challenge this deeper assumption, I can see how false it is and the anger and fear seems to lesson. In the end I am still disappointed about the loss of a session, but at least I am not feeling like it was done to hurt me or because I was worthless or less important than someone else.