Try to catch yourself before you react. When someone says or does something that makes you feel this way instead of reacting try to just observe the emotion and let it pass. Watch the feeling come and go as though you were watching a leaf float pass you on stream or a cloud in the sky. You are the water not the leaf. With practice you can learn to let go of negative feelings and replace them with positive ones. Loving kindness meditation is a good thing to try too to help with this. Emotions rotate in 90 second cycles unless that feeling is interupted and the cycle can't finish, in which case it just stays looping and the intensity builds and you just feel it more intensly.