I also have a speech impediment, I've had it my whole life but it's gotten alot better as I've grown up but it's still there. It's just weird because some days will be really good where it barely happens, but then I also have days where that's all that happens when I talk. I've found that taking a deep breathe before talking or just trying to calm myself down helps. I think the reason stuttering happens alot for me is the memories of me stuttering and have negative reactions so whenever I talk to someone or try to talk to them all I can think to myself is "don't stutter" which I think makes it happen more often. I don't really mind that I stutter but sometimes I do get really frustrated because I just want to talk normal like everyone else but I have people around me that respect me and allow me to get my words out instead of making harsh comments, although I do deal with that at my job. When it comes to saying my name that's when I have the most trouble because I have the worst memories connected to trying to say my name, I have found that if I take my time and breathe it'll come out fine sometimes but most times I just freeze up because in my head I'm thinking that I'm going to stutter. The other day I had an interaction with someone that asked me my name I just told them that I have a hard time talking at times because I have a speech impediment and they made me feel okay about it and after that I was able to say my name fine ( I was going to resort to writing it down). So I think it's more of a confidence thing and just being in your head about what people may think. I've learned that people will judge you no matter what you do so just be yourself and if you stutter it's okay just keep trying, the worst thing you can do is stop and let people dictate your life for you.