Evil Eye-Yetzer Hara

I just read in The Forward that the evil eye is a capability in all people. You can cast it yourself on those you dislike for whatever reason may plague your peace of mind.

It is my sense, however, that giving into your yetzer harah and turning your evil eye on and enemy is clearly bad Karma, and will result in the evil eye being cast back on you. I must be strong, and keep my yetzer harah to myself, even though there are two people who clearly deserve some bad luck. Let the universe take care of them, I say.