How could I overcome this?

How could I overcome this? Basically, I've been stuttering for nearly 25 years, since I was a kid. My issue is that I become really anxious and uncomfortable immediately whenever I see videos of others who stutter. Apart from "my father," I have rarely encountered anyone with a stutter in my life. I probably won't be able to treat them even if I do run into one, and I'll still feel anxious and frustrated. How could I overcome this?