You have to not care, live your life. It’s how you talk they will get over it. People will judge you no matter what. I get it though it’s awkward as fuck. I’m 33 now and I PROMISE people don’t care as much as you do about it. I’ve been a server, worked call centers and now currently doing sales, the jobs where I stuttered the worse were the ones I had the least amount of talking and social interaction. It truly is a muscle you have to flex, it will be awkward at first but keep putting yourself in those situations and it will get better I promise.