Does emotions affect speech

Does emotions affect speech Hey, everyone. Gonna make this short. So I always heard that your stutter reduce when you're confident and all that. But in a way for me it's different. No matter any how brave I am, I still end up stuttering. It's like I hook and can't get the word out. Anybody with similar experience. How do you handle it?. Also sometimes it's like the stutter is generally worse at a given period then better sometimes.