It may be difficult to understand why and how people become addicted to drugs and other substances as there are many misconceptions about how addictions work. For instance, one could mistakenly believe that individuals who become addicted to substances lack moral principles or willpower and may well simply abstain from addictions by choosing not to. In reality, addiction is a complex barrier and quitting certainly takes more than willpower and good intentions. Fortunately, researchers now know more than ever before about additions and contributing factors for addictions. The below mentioned paper will discuss these two topics as well as explain the biological neural pathways that underlie addiction.
Link to research paper: Understanding_the_Disease_of_Addiction