Blogging is definately a good option.

When I was about 17, 18ish I started blogging in a secret journal online. It was totally anonymous and you couldnt read without logging in/a password that way if someone even goes through your browser history they couldnt find what you had written anyway. I cant remember what the site was called unfortunately but im sure you would get somewhere with a quick browser search.

Nowadays I am more accepting of my condition and my rants so my blog is public. Ive come along way since the angry and frightened teenage girl I used to be! I think logging your throughts and comparing them over time has been a useful tool for me.