I have pretty much the exact same problem. Right now I have a block on saying my last name when we do introductions at the start of meetings at work - which happens all the time since at our meetings half the people are in the room and half the people are on the call virtually. I just started this new job so I'm worried that I'm not making the best first impression, and I get seriously anxious before meetings and the intro is all I can think about. I can trace the problem back to an ice breaker meeting 3 years ago where I was introducing myself and froze half way through the sentence as if I couldn't remember my name, which was seriously embarrassing and it stuck with me. That said I've actually come along way now that the last name thing is my only issue - about a year after the initial icebreaker incident, my block got so bad that I couldn't say my name at all, or where I was from, where I studied, i.e. any form of intro and I also hated presentations! I was part of a talent program at work which made the stress worse as I was expect to always perform with confidence. What helped me was a mixture of things - hypnosis (not the kind you see on tv, this is more like a therapy session followed by a guided meditation), Michael Williams online course Improve Communication: Speak smoothly, clearly and confidently (I downloaded the app Udemy to do this), and also meditation and confidence building (using the Headspace app, and learning things like CBT and self esteem (Nathan Branden books) where you realise messing up isn't the end of the world), practicing in settings the built confidence, finding different ways of saying things and realising a pause can be natural and others aren't perfect speakers either. I know that I'm planning to do another hypnosis session soon to tackle my current problem (they're price is the only real downside...), since at meetings I've been coping by just introducing myself using my first name while everyone else effortlessly says their full name and I stick out like a sore thumb. Also I've been stressed lately and I'm getting more anxious about this than I should be, so I want to nip it in the bud before it becomes worse. Hope this helps, I know for me it helps even just knowing I'm not alone with this problem.