I have been journaling for quite awhile too. There is something about seeing your thoughts and feelings on paper or a computer screen that helps to get control of them
Like the previous poster, I have a whole box full of these things -- going back and reading them later helps to see the progress I have made
As teacher both in community college and high school, I have taught students the value of writing as a learning tool. It really helps one focus and retain information.
There are some really nice journals available, or you can go to the store like me and by cheap spiral notebooks. I think the more you try journaling, the more helpful it will become. I really wish you well