How much of a negative (or positive) impact has your stutter/stammer had on your life?

How much of a negative (or positive) impact has your stutter/stammer had on your life? Today I was interviewed by a guy who's writing a book on stammers/stutters. I'm a 22 year old female, in college, and it seems my experiences have been very much positive. I've never let my stammer stop me from doing things (aside from avoiding some phone calls, I do not like phones...), and I suppose I forget how much it can control someones life. So I was just wondering, what experiences have you guys had that have affected your life?