I don't communicate very well in session and I am often stilted and wordless. However, I have noticed that when I do speak more, the most important elements of what I am saying are lost amongst the other noise of the session and I find it hard to confidently re-raise them. I don't think there is such a thing as talking too much, but I do think that a lot of words make it harder (for client and therapist) to identify the most significant elements. There are lots of potential distractions.