In the same way, the cheesy sign that said HALT, which stands for “Don’t get too Hungry, Angry, Lonely, or Tired,” gave me clues about what physical and emotional needs to take care of when I seemed to want drugs out of the blue. Sure enough, I’d often discover that a “drug craving” was actually hunger, irritation, or a need for sleep or social contact, which I could manage without resorting to heroin.