Criticism is an opportunity for growth. When you receive it, instead of getting angry simply think 'thank you'. After that, you can decide whether to act on it or not.

Now, some ppl have problems distinguishing between personal attacks and criticism of actions. Both on the giving and receiving end. If someone attacks you personally, its safest to assume they were really criticising an act not you as a person. This requires some maturity & self-esteem.

Theres a good buddhist saying for this, btw: if someone calls you a dog, before you bite them, first check to see if you actually have a tail.