Adopt the mindset of “if I was born with a stutter, then you have to listen to it”. Practice helps also. Speaking is just like anything else and if you don’t use it, you lose it. Try to read out-loud every day and go through a drive thru and order a tea or something cheap every day to practice. I’m not going to say your life matters and blah blah blah because honestly it doesn’t. And once you realize that, your speech will get better.