The best method of treating stuttering in my experience is extensive socializing. Stuttering, at least for me, is mostly psychological; the longer I keep myself isolated and away from others, the worse it gets, and vice versa. I was almost entirely fluent a few years ago, which coincided with my having an incredibly active social life. I've since lost a good deal of my social life, and with it, a good deal of my fluency. Eh. I'm sure there's a physical component as well, as many loners with few friends can communicate fine even after extended periods of isolation, but for me, and I suspect many other people with my problem, it's a muscle that atrophies without frequent use. It sucks, and talking has always been physically painful to some extent for me, even when I was fluent, but there are worse disabilities to have, I reckon. I'm otherwise fine, and for that I'm grateful. But, socializing seems to be the key. If you enjoy it, great, if not, well, text to voice is becoming faster and more lifelike every year, and I suspect we're very close to developing technology to give people who are unable to speak the means to do so in a manner that is near indistinguishable from the real thing. So have hope. It's not a cure, but it doesn't have to be. Frankly, I'm surprised something like it doesn't already exist.