Tell the therapist what you've said here in your post.

In therapy, take it as slow as you need to and keep working at it. It will come with time.
Be as honest as you can in therapy, and when you think your T is thinking something about you or what you said, say that right then so you can talk about it and explore it.
You'll often find it is your thoughts about yourself that you are imagining someone else is thinking; checking it out right in the moment lets you hear what the other person is actually thinking.