18. Drug free. When the SHTF you don’t want to be addicted to illegal drugs of any kind or cigarettes or alcohol. These will make you weak and you will not be properly prepared to survive. I and other experts say this because when you run out you don’t want to be dealing with drug dealers of any kind when the SHTF!!! On the other hand cigarettes and alcohol can be bargaining chips to use at your own discretion!!!!