You might find a lot of the stuff is more focused on alcohol, however there will be some things that are useful! There are a number of people here who are sober from heroin as well as other opiods. If you use the search bar you might find some more helpful info. I have also added a tag to your post to make it easier for others to find it and offer advice
Maybe I don’t get any useful tips (As you mentioned most of the members were into alcohol) but it seems here I can learn a lot from different people sharing their experience of recovery.
There is a line that says “Have Faith in God & He will show you the Path”
Very happy to find this platform as one of my paths to my sobriety.
I hope you can! Of course there are some aspects of recovery that are specific to particular substances or behaviours, but over the last few years I have learned a lot from people with a variety of addictions. Most of us go down that path because we are trying to get away from something, so a big part of recovery is learning to make peace with ourselves and live a full and happy life, substance free!