My tip would be acceptance and positive affirmations. The beginning is the hardest part. For me, I repeated and waited as long as it took until it came out. I didn't force it and it was like a test to see if the stutter was indefinite. Either way I had to accept I stuttered and had to live with it and I knew the more I avoided the more scared I'd be, so the next challenge was to see if it got easier over time once I got through the worst of it and decided to continue anyway. So, more phone calls, what ever calls I needed to make, I'd hop on it without much thought. Hit the block, repeat the word just before the stutter or go back a few words almost as though I am giving up the attempt, ready to say anything, but happen to say the same thing. As long as it took for me because I did not want to avoid the word because I knew there couldn't be anything special about this word so I'd just use the opportunity to see what happens. It requires strong will and bravery not to care (it's not like it's anything new) and see it through. Eventually, I stopped caring because more people than not, WAY MORE, where fine and impressed by my perseverance and once I knew I could handle the worst of it, the whole situation became like any other. The new people and phone ordeals happened to me twice over! First when I was finishing college and had to get a real full time job, and the second was more recent, last year pretty much, where I started sales and even though I thought I was long over worrying about phone calls and meeting new people, dealing with clients reset all of that! But just think what that means, the only thing that changed was how I perceived the situation after all these years! I believe it means we can get comfortable in any situation but it requires us to face our demons and keep moving forward past them. Feel the fear, do it anyway!