Imagine for a moment that you have just been released from jail. You’re carrying a plastic bag with a change of underwear, socks and a toothbrush. Your pockets are empty. Your wallet would be, too, if you owned one. You have no family. The friends you have are still doing drugs. You know if you go to them you will be tempted by your previous addiction. But you’ve changed. You’re trying to better yourself. You don’t want to fall back into those old habits.