In the United States, drug policy is primarily controlled by the federal government. The Department of Justice's Drug Enforcement Administration (DEA) enforces controlled substances laws and regulations. The Department of Health and Human Services' Food and Drug Administration (FDA) serve to protect and promote public health by controlling the manufacturing, marketing, and distribution of products, like medications.
Like any other life-threatening disease, drug addiction requires intensive treatment by credentialed specialists. While some may be able to find recovery alone, true healing is a lifelong process that typically requires continued support. Drug addiction treatment options range from medical detox and inpatient care to 12-step programming, pharmacotherapy and outpatient services. Throughout a continuum of care, patients are offered resources, skills and support to ensure that they’re making progress toward recovery goals.

The concept of group therapy encompasses a number of equally important goals. For example, one of the goals is to facilitate an environment in which recovering alcoholics can learn from one another. In your case, you have thoughts and experiences that could help someone else in the group. Likewise, what other people have to share could prove beneficial in your recovery.
Research the history of the Treatment Center or facility.  What is their success rate?  Can you find any medical recommendations for them online from members of the established rehab or medical community?  How long has the Center been in operation?  Is their leadership on solid ground?  Are there any signs of financial corruption associated with the Center that is readily visible on the Internet?  It is your responsibility to dig for this information.  If you cannot find any information about a given Treatment Center online or at your local library, move on to the next Center on your list! 3 Stages of Drug Alcohol Rehab-How It Works