For talking on the phone or ordering at the drive thru there's some stuff you can do, like taking time to breathe, slowing down and putting pauses between words, stopping then starting over, or changing what you say or the order in which you say it if you get stuck on a word. For me though, the thing I fear more than anything else is just saying my name. It starts with the sound I have the most trouble with, so I can almost never say it without stuttering pretty badly. I can't tell you how many times I've heard, "hahaha did you forget your name?" It's not only frustrating, but embarrassing. And honestly, the only thing that helps me is to not worry about it too much. But that's easier said than done, and it doesn't help too much. At some point you just gotta go for it and hope for the best. And just know that if people don't like you or make fun of you just because you stutter, it reflects poorly on them not you. Which is no help in the moment I know, but it helps to keep me from being embittered.