Emma Mills said this quote

Close your eyes, real tight, and then count to three hundred. That’s all you have to do. You just count to three hundred, and when you open your eyes, five minutes will have passed. And even if it hurts or things are shitty or you don’t know what to do, you just made it through five whole minutes. And when it feels like you can’t go on, you just close your eyes and do it again. That’s all you need. Just five minutes at a time.