Although there is no medical test that can predict who would acquire an addiction, there are psychological qualities that can make someone more likely to develop one. The sensation of reward is a fundamental denominator in all addictions.No matter where you get your joys, your brain registers them all the same way. A drink of wine, a casino setting, a shopping excursion, or a delectable lunch might all be part of the package. The brain is filled with the chemical dopamine when a person feels rewarded. Dopamine is involved in a variety of functions, including emotion regulation. And maintaining a healthy dopamine balance is crucial for both physical and mental health.