How can i not get embarrased easily?

I get embarrassed SOO easily.

Like, today in spanish, the teacher called on me and I wasn't paying attention and I turned SO red. and everyone was like omg shes like blood red and all this, and then to make it worse the teacher says Well I'll call...

on someone else I don't want to turn her purple

I was like MORTIFIED.

How can I make myself not turn red and get embarrassed?

Same happens to me... just try to relax a bit, you obviously feel nervous when lots of people are focusing on you, just relax a bit, theres nothing to be embarassed about =]

its a tough process. you must harden your tolerance for excessive reactions. how?? first you'll have to engage in activities that induce shyness in you - but you'll slowly learn that theres really nothing to be embarased about :D it will probably boost your self-confidence which in turn also helps with shyness. sometimes in life its good to be a little shy (personal life - intimacy)where in others not (business, formal social contacts). also try the following: go to a sauna (people have to b3 naked there :D, you learn not be embarased about your body - everybody has one, only yours is like no other), do sports where people can see you (run trough town, exercise in the backyard), go to a rock concert (go wild!!! nobody cares :D). its all about confidence, learn about yourself, what are your strenghts, what is your weakness??
Hope it helps. Stay strong :P