This is true, but these people never become addicts because they do not need drugs to fill out the empty spaces of their lives, in other words, their happiness come from other sources, and drugs become more an entertainment source rather than a need, as the Harvard Mental Health Letter describes “First, to state the obvious, a drug must be available in sufficient amounts to sustain an addiction. But it may be just as important that other sources of satisfaction are not available… People risk addiction most when they lack other capacities, interests, and choices, other ways to solve problems, other sources of attachment to something outside themselves. The brain 's motivation system is more easily disturbed when varied sources of reward and expectation are not preserving its balance” (Harvard, 2). Drugs become a problem when the person loses the sense of moderation, and this is due to the alterations in the reward system of the brain when drugs are consumed repeatedly.…