In his book "The Addicting Behaviors", psychologist W.R. Miller stated " an individual can become addicted, dependent, or compulsively obsessed with any activity, substance, object, or behavior that gives him/her pleasure". What motivates a person to gamble so much that they lose everything they have, or work so many hours that they miss out on any kind of social or family life outside the workplace? According to chapter 4, some feelings, substances, or activities that produce them are so motivating that little else seems to matter. The human brain contains billions of cells called neurons that give the beginning to our thoughts, emotions, perceptions, and drives. The brain releases dopamine in order to experience pleasure and to motivate our responses to everyday life. In the case of drug addiction, these drugs produce excessive and rapid domaine surges and the brain responds by lowering the normal neurotransmitter dopamine production. Eventually, the disrupted dopamine system stops the addict from feeling any pleasure from the drugs and it becomes a necessity to function. Charlie Sheen, Lindsay Lohan, and River Phoenix were and are all good examples of this. Drug addiction can be treated and managed but again the individual must be motivated to seek and follow appropriate treatment. Lets hope they are.