I am a selfish person in that way, I always want to be very happy and less stressful. With this as my stated goal, I practice forgive and forget. It is a slow process. An eye for an eye sounds good, but it leaves everybody blind! Is it worth it` One can use judgment after thinking. One has to forget it too. A retentive memory is good, but to forget is also very good. Revenge, in some cases, may be necessary but it should be taken in the rarest of rare cases. One has to see the intention behind the act. Revenge is like biting a dog because the dog bit you. You should not forget it, only to ensure that you are not bitten again; but instead of biting back, learn from the incident.