Buddhism

Some emotions take time. Like when someone very close to you dies. At first you will think about it and feel the pain almost every second. As time goes by you find longer and longer periods of not thinking about your lose. As time goes by you will find your thoughts about the person change to more positive thoughts and less about the pain. In the same way, your grudge will fade. You might find that embracing it at first may help cut the time it takes by being conscious of your thoughts. Or may be not.