Exercises to allow vulnerability

Hi all,

does anyone have any tricks or exercises for letting down their barriers/allowing vulnerability? I'm having difficulties with freezing up and closing up in session and really want to practice sitting with the discomfort of vulnerability.
So far, I've tried meditation prior to session and writing an imaginary dialogue of what I really want to say but sometimes can't.
Any other ideas?
Thanks!

Throughout the week, I write down all my thoughts and feelings on a sheet of paper. I bring the sheet of paper and read it to my therapist.

Instead of focusing on what I want to say, I focus on my thoughts and feelings as I write them on that sheet of paper. I always carry that sheet of paper with me so I can instantaneously write them down as they occur throughout the week. When I see my therapist, I pull out the sheet and paper and read it. It's a good start toward breaking barriers down slowly. So far this has worked for me.

Might be worth paying attention to how you feel with your therapist. Do you feel safe? Scared? In contact? Alone? How do you experience the relationship? What could make it easier to open up? What would have to feel different?
My feeling is the relationship is really important for creating the right environment for the client to safely become vulnerable.