person A: a few years back i was addicted to drugs and alcohol... i could not take care of my responsibilities...
person B: I'm glad you're feeling better. I'm sorry you went through that_comma_ I hear that addition is tough and often starts after having a major surgical operation.
person A: it started when i was 14 i was hanging out with the wrong people and i got really bad before i realized i needed help. i went to rehab and changed my life around_comma_ i stay healthy these days i'm about a year sober
person B: I'm glad you got the help you needed and ended up in an actually helpful rehab. It's always good when you have control of the things in your life. Just remember to stay strong when things get tough again and to lean on your support structure. 
person A: i will! a lot depends on the person in rehab and the attitude they have in there! thanks it was great talking to you!