Why Relapse Isn't a Sign of Failure
Addiction relapse is akin to relapse for other chronic diseases
"Addiction relapse is common. Studies suggest that approximately half of all individuals who try to get sober return to heavy use, with 70 to 90 percent experiencing at least one mild to moderate slip. In other words, not many people say “I want to get sober,” walk into a treatment center, and never use drugs again."
In this article from Psychology Today, David Sack, M.D. describes what causes relapse and why you shouldn't give up on yourself if you succumb to relapse.