If you find yourself teetering on the edge between cutting and not cutting, looking at your razor and thinking about the blood...stop thinking. Instead just get up, walk over to the razor and pick it up and throw it away. Or flush it, or go outside and throw it in the neighboors yard, anything like that. It may seem like 'you cant' but you can. It's just whether or not you just get up and do it. After that, leave. Leave the place where the thoughts can build and boil. Walk, talk, write, run, anything.

Sounds all too cliche, but if you did it, I bet you'd feel better.