They don't see the beauty around them, and they don't even consider the potential benefits of forgiving whatever transgression has occurred. Worse still, people who have gotten their revenge find in retrospect that it wasn't nearly as sweet as it seemed it would be. They find that most people don't share in their glee at having harmed someone else, and they even find that they feel a bit bad for that someone else. I've been in the situation myself, but I've been fortunate enough to learn rather early on that revenge accomplishes almost nothing constructive in my life. But please consider the alternative that will help you to grow as a human being and will help you to have greater peace of mind and a stronger presence in the moment.
Forgiveness is much stronger than revenge, in all possible ways.
Never does the human soul appear so strong as when it forgoes revenge, and dares to forgive an injury. E.H. Chapin Revenge is ever the pleasure of a paltry spirit. A man that studieth revenge keepeth his own wounds green, which otherwise would heal and do well. To forget a wrong is the best revenge. Italian proverb To be wronged is nothing, unless you continue to remember it.