There are a lot of people who have been in your position or had a harder time and did manage to change, so it's at least possible. Since it's possible, you clearly didn't try everything. So that's there to look forward to? Finding out and trying something different that might work. You likely don't even know about all the things that are out there to try so how can you give up before exhausting all options? You're missing that third choice which is to keep searching for what you've been looking for. Those other people who found it weren't special or different. They just didn't stop looking and now they live happy and productive lives. And they like themselves and their lives. I don't know where you live, but the #1 thing I can recommend is to find other people who stutter and talk to them. Other people are the greatest resource, so if you haven't been able to figure this out all by yourself, go find some help.