A hurt is at the center of all addictive behaviors. . . . The wound may not be as deep and the ache not as excruciating, and it may even be entirely hidden—but it’s there. As we’ll see, the effects of early stress or adverse experiences directly shape both the psychology and the neurobiology of addiction in the brain

... While nervous tension may be a component of stress, one can be stressed without feeling tension.

It is impossible to understand addiction without asking what relief the addict finds, or hopes to find, in the drug or the addictive behaviour.

The very same brain centers that interpret and feel physical pain also become activated during experiences of emotional rejection. In brain scans, they light up in response to social ostracism, just as they would when triggered by physically harmful stimuli. When people speak of feeling hurt or of having emotional pain, they are not being abstract or poetic, but scientifically quite precise.

A long-term substance abuser, a few months before his death, penned this poem: Went downtown, Hastings and Main, looking for relief from the pain. All I did was find a ticket on a one-way train. ... Give me peace before I die. The track is laid out so well; we all live our private hell; just more tickets on the hell-bound train.

We may not be responsible for the world that created our minds, but we can take responsibility for the mind with which we create our world.

The difference between passion and addiction is that between a divine spark and a flame that incinerates.