I've always liked workbook sorts of books and finally, around 1996 came across Julia Cameron's The Artist's Way and went through that and her "morning pages" worked for me, got me doing a journal sort of activity long enough for it to stick and show some good uses. Morning pages aren't dated or anything and that about killed me because I started going back to find out when I thought X, Y, or Z and doing things trying to compare dreams I had each week the night after therapy or counting up number of times something was said or done. I started dating my entries and it was much better as a mood diary and overall record, giving me lots of prompts of what to talk about in therapy.