" Much of what we do arises from automatic programming that bypasses conscious awareness and may even run contrary to our intentions, as Dr. Schwartz points out:
The passive side of mental life, which is generated solely and completely by brain mechanisms, dominates the tone and tenor of our day-to-day, even our second-to-second experience. During the quotidian business of daily life, the brain does indeed operate very much as a machine does.
Decisions that we may believe to be freely made can arise from unconscious emotional drives or subliminal beliefs. They can be dictated by events of which we have no recollection. The stronger a person’s automatic brain mechanisms and the weaker the parts of the brain that can impose conscious control, the less true freedom that person will be able to exercise in her life. In OCD, and in many other conditions, no matter how intelligent and well-meaning the individual, the malfunctioning brain circuitry may override rational judgment and intention. Almost any human being when overwhelmed by stress or powerful emotions, will act or react not from intention but from mechanisms that are set off deep in the brain, rather than being generated in the conscious and volitional segments of the cortex. When acting from a driven or triggered state, we are not free. "

― Gabor Maté , In the Realm of Hungry Ghosts: Close Encounters with Addiction