I started journaling when I started therapy. It helps me to sort myself out, to get to the emotions that otherwise just hide behind symptoms.
I write letters to my inner child sometimes.

I am way better at writing than at talking, and sometimes emotions seem to get stuck in my throat, and I just can't say them, but I can always write them down.
I have handed my journal to my therapist, too, in order for her to read certain pages.