Advice on dealing with face always turning bright red?

So, I have this insecurity about my face turning tomato red really easily. It’s very annoying and keeps me from being my whole self around my friends. Some examples of places or situations when this happens is when I think about it turning red and then it does! Another is when I feel uncomfortable when a teacher is talking about a touchy topic and then the other students would stare which only makes it worse. I’ve tried convincing myself that I shouldn’t be insecure about it and that no one really cares that it turns red, but it hasn’t worked too well so far..maybe I just need one of those slap-in-the-face statements that just make you realize and actually believe it.

So, does this happen to anyone else? How do you deal with it?