In that case, it is entirely the wrong expression to use. To simply grow out of something is to primarily yield to natural processes. Babies simply grow out of breast feeding. Toddlers simply grow out of putting random things in their mouths. Children simply grow out of name-calling and toy-hoarding. Adolescents simply grow out of feelings of invulnerability.
If an addict primarily yields to natural processes, he simply behaves in complete accordance with addiction.
If an addict primarily yields to natural processes, he simply behaves in complete accordance with addiction.