I find that the word or phrase that I say prior to a specific problematic word or phrase has a lot to do with whether or not I stumble. Stutters seem to be very idiosyncratic, though for me it's both a matter of when I stop to take a breath and when I make certain consonant sounds. For example, saying "That's the one" with the "th" sound forward is often a non-starter for me, but dropping the T to say something which starts with a soft, nearly sub-vocal exhale works fine. It may sound like "Hat's the one," but people always get it; there's never a question. Sometimes my speech patterns may come off as a little odd, but it's better than falling into a stutter — sometimes people tell me I sound more interesting to listen to, because I don't sound like everyone else. I figured out what worked for me over years and years of trial and error. A speech therapist may help you find what works well for you much more quickly. Good luck. Edit: typo