If you don’t react then you don’t create new karma and the old karma will exhaust itself. It is not easy. You need practice for this because you are accustomed to react. But ultimately what matters is how peaceful you are, and if you can remain balanced within your own self. Just let the karma exhaust itself by not reacting or responding. People may think you are a loser because they will not understand you. But you are a winner because you feel happy inside.