I have kept a journal since I was probably 14 or 15. It's the one thing that allows me to get a lot of nonsense off my brain so that I can rationally think things through. My journal is always filled with a lot of horrible rants and random thoughts that may not make sense to someone if they were to read it.
I thought about creating one of those "live" journal things online but I don't want anyone reading those thoughts. Those thoughts are for me and me alone. Plus I need to actually have pen to paper in order for it to be affective for me. I don't know why.
Writing it helps me to work through so much. And things really build up and I end up blowing up about something silly when I don't write in it consistently.