@browncoat - I actually find that, rather than writing down my problems, I like to talk them out on my tablet camera. I know that sounds a little bit weird, but somehow it's kind of comforting to watch afterwards and realize that my worries from last week aren't bothering me any longer and perhaps the worries from this week will go the same way.
It was actually suggested to me as a treatment for anxiety by my counselor as she thought I would be more willing to talk about my problems with someone who I absolutely knew wasn't going to judge me, even if that person was literally myself.
And it's true. I'll say things to the camera that I would never say to a friend because I wouldn't want to offend or burden them and sometimes you just need to say stuff out loud to realize it's not that big of a deal.