A Habit is a behaviour.
An Addiction is a need.
Behaviour follows belief.
Habits follow convictions.
Convicted beliefs cause habits.
Habits are a sub-conscious choice of action.
Extreme emotional needs cause addictions.
A mental belief that causes an emotional need can initiate an addictive physical habit.
We become addicted to physical substances that are a short term solution to a need for emotional energy.
My addiction is my strong attachment to whatever I believe that I need emotionally.
My addiction becomes an habitual behaviour because of my conviction that I cannot live without it.
My addiction is my sub-conscious need for the substance that I am habitually craving.
It is not the substance that causes the addiction but my sub-conscious belief that I need it.
A craving is my sub-conscious will power needing the substance that it has formed an emotional attachment to.