Hello, I recently got into a school with an aviation program and am concerned with receiving my medical. I have a history of substance abuse, ages 20-26, attended a long term treatment in 2015 for 15 months, and was completely abstinent for 2.5 years. I just recently got a citation for possession of marijuana, my first criminal offense of any kind. Only an occasional user, only used one other time about four months ago. Is there any hope of me ever flying? I have since committed to complete abstinence and would have no problem taking drug tests or any other evaluations for an extended period to prove it. Thank you for your time and advice.