Hey, you're gonna be fine. 3 weeks clean is a great accomplishment that you should be proud of! Think about this: you may not have the power to switch-off the depression or anxiety disorder that makes you want to hurt yourself, but you can control some of your thoughts one by one. Take a second, as you're walking toward the doors on the first day, to tell yourself that you are an absolute badass who is going to change the world, no matter what happens in there. You've got this! <3