If you live in America, the best piece of advice I can give you is to find and attend an NSA support chapter (http://www.westutter.org/find-an-nsa-meeting-near-you/). You'll meet people who stutter and im sure many of them have gone through many therapies. All the people who I know who overcame stuttering didn't do it with techniques. Techniques try to make you fluent and teach you that stuttering is not a good thing and you should avoid it. Instead they slowly learned to stop hiding, to stop using all their effort to keep this secret and to accept themselves. Only then were they able to stutter but without fear or struggle.