Kaika, just because you bring your journal with you to session doesn't mean you have to hand it over to your T for her to read. Journals are very private. You could read just a specific passage to her, for example. This could help her know you better, understand what is important to you, etc. You don't have to do a "big reveal" at session #3. Only share what you are comfortable with. One thing my therapist said to me very early on in therapy is that clients are never upset that they shared too slowly, only that they shared too much too soon. Don't force it. Build trust. I think it says a lot that you are even willing to bring your journal into the same room with your T. It's a good beginning.