One thing that can concern those in recovery is how to have fun without drugs or alcohol.
They can have the mindset that without their drug or drink of choice it would be impossible to have any fun. To them, it was the abuse of these substances that was synonymous with fun. This is common in early recovery and is also a reason for relapse, but does not have to be. You can have fun in sobriety. Looking back, you will see that it is ever so much more an experience than the fun you had while high or drunk.
Our alcohol treatment and drug rehab center involves intensive therapy and treatment programs, but it also involves a bunch of therapeutic elements to teach our residents how to have fun in sobriety. There is so much to life that cannot be experienced in pill form or at the bottom of a bottle. You can and will find this as you continue your sobriety and work your program. Find the thing that you want to do with your life, something constructive or something you are interested in, and see how it blesses and changes you.