“Yeah, it’s—you don’t know what’s going on. You don’t feel anything. Kicking it is so hard because all of a sudden your whole body comes to life, and you’ll have had all of these physical problems you didn’t realize you had because you don’t feel a damn thing. And so your knees will hurt. Your joints ache. Your brain hurts. It’s very depressing. It’s very hard to stay off. Getting off isn’t as hard as staying off.”