There is a distinct line drawn between positive influences and negative influences as far as substance abuse is concerned. Even further, positive influence has very clear benefits over negative influence. This is because whether in pre-recovery, recovery, or post-recovery, these influences in subtle ways effect the behavior, attitudes, and perceptions of the user/former user.
Preference toward the Positive
We can say there is a good reason to prefer positive influence over negative influence because of both our intuitions and observations. Obviously more often than not people will prefer positive lifestyles, approaches, and outcomes to negative ones. Surrounding oneself with positivity and success is conductive to achieving this preference.
Additionally, we can observe the relative success rates of people who follow a positive path rather than a negative one, and witness proactive change more consistently among those who choose a proactive lifestyle and adopt positive beliefs about their chances to succeed. This is complemented by the fact that the influence of others in addition to lifestyle change is the best way to attain a lasting sobriety, rather than admitting defeat or a defeatist attitude.