I used to journal more, but I find I don't much anymore because I just don't have much to journal about now that I'm stable. Many people find it really helpful. Others not so much. My T tended to like it when I journalled because I tended to write with a very specific purpose in mind and we really used it in session. On the other hand, he had to work with my husband to limit his journalling because for my husband, journalling tended to cause him to spiral into really irrational thinking as he would get sort of obsessive about it. It can go either way depending on the individual. I think generally it is a positive for most though.