I love my journal and I love writing in it. It wasn't always easy though and like Wantto my early journal entries are more facts about what happened or how someone else was behaving rather than my thoughts and feelings. Now, I use my journal for jotting down questions I have about myself, writing poetry, letters, almost anything. I also record dreams in my journal.
You might want to begin by simply writing a letter to T, or to yourself. I remember I wrote many letters to T in my journal, some sent some never seen by his eyes! Just like therapy, begin where you are.
Good luck.