I'm no expert in meditation, and I certainly don't do it enough to know all the possible techniques, but Headspace is an app that has sessions for many situations and emotions, including anxiety. Also, Stamurai is an app for stutterers that also has meditation sessions specifically for stutterers. In general tho, I guess the most common techniques are body scans and focusing on your breath? It just teaches your mind better control somehow. I'd check out those apps for a better explanation tho. And sometimes I interrupt people too because my mouth finally feels relaxed and I have to jump thru that window before it's gone. Or before the silence causes tension again.... I rarely do it (usually opting for seeming like a quiet introvert) but still something I work on too