The wrong kind of writers block

A couple of months ago my old therapist had me write up a list of my good qualities. You know, something to look at when I’m feeling down. About a month ago I decided that I wanted to turn that list into a paragraph or two. Not really to share, but just to “self disclose” a little more (which is something I have trouble with).
For some reason I have been unable to do it. I created the Word file, but havne’t typed a thing. I get uncomfortable whenver I think about acutally writing something, so nothing ever gets done. I seem to be having a self esteem crisis lately, and I’m not entirely sure why I’m so down on myself.