You can keep this topic updated and make a safety plan with the forum. We've had a few people do this before. (Well, I haven't been active in a while..)

The idea is that when you're feeling destructive, you post on the forums. Give the forum an update 2-3 times a day (or more, as much as you need too) and leave a voice-mail or email your T and tell them the truth. If that is TOO much, and you live near T, print out the post and give it to them. Honesty is key in getting any kind of treatment.