I know a lot of people who stop using opiates, but only a few who stayed off them long term (more than 2 years). ASAM states that for all substance abuse disorders, those who remain abstinent longer than 2 years is a mere 2%. That puts the odds of you staying off those pills very slim. You have to do everything you can to succeed. Those whom I know who had the best success (staying off prescription pain meds) first had a professional substance abuse assessment, then did the recommended treatment and continued after they were done with treatment by attending 12 Step meetings for life. Not a bad alternative to being a prisoner of a small pill and having all the bad stuff that goes with it. You can always get more pills. So don't underestimate the importance of a proper assessment and working a real recovery plan that professional treatment can help you with. Otherwise it is like driving a car without insurance. The only people who really feel OK with that are those who think nothing bad will happen while they are driving, and we all know that is stupid thinking.
Get better and get a spiritual program and you can never worry again, guaranteed.