There are developmental stutters, which are super common and those ones typically go away in childhood. Then there are some us lucky folk who just continue to stutter. I feel your pain! I'm a 28 year old single mum, work my ass off and encounter assholes literally everyday. It's painful but I think it's important that we strive to accept ourselves as there isn't much else we can do. Go on YouTube and search "stammering and creativity". It's basically this fellow talking about stuttering and his experiences and I remember watching it for the first time and feeling a weird shift. Because I found, for me, that he hit the nail on the head in everything he said. It made me feel less alone. Remember though, you aren't alone. You aren't the only one out there and we all have your back through this.