I have it all planned out

Ive got my relapse all planned out. Ive left the pub far before anybody (including my so) else, the razor that im gonna pluck apart for its blades right in front of me, the place i so desperately wanna cut (my forearm, eventhough its so unpractical) planned out, the door locked, and i have so little rational thinking left. I want to hurt myself. Right here, right now. PLEASE talk me out of this