That was my biggest set back too. Not being able to open up. Good Lord..Especially to someone I didnt know or in front of a group of strangers.
I was sorta put on the spot the first time in a treatment center. And I found when I started..I couldnt shut up.
And it felt so good to get it out. And even better to have someone give me input on it.
Now I am always running my mouth. They dont know what they did to me. Scratch the surface and I exploded.
It will get easier. But there is no way around it. It is something that must be done in order to move on. The sooner the better IMO.
Youll do fine.