Once a kinder garden teacher had decided to let her class play a game. She told each child in her class to bring along a plastic bag containing few potatoes. She asked children that each potato will represent the person that child hates. So the number of potatoes to be kept in that plastic bag depends on the number of person that child hates. So when the decided day came, she asked children to bring those potatoes which represent the persons they hate. Teacher noticed that some had 2 potatoes in that plastic bag and some had 3 and some had 5 potatoes in that plastic bag. Now, she told them that they have to carry that plastic bag with them for a week, wherever they go. After 3-4 days passed children started to complain because of the unpleasant smell that was coming from rotten potato. Beside, those kids who had 5 potatoes had to carry heavier bags. After one week all children were relieved because the game was finally ended. Now at week end teacher asked children, "How did you feel while carrying these potatoes with you for one week?"Children started complaining about the trouble they had to got through because of those rotten potatoes and their unpleasant smell, wherever they go. Now after all complaining and discussion at last teacher asked all children to sit silent and told them the hidden meaning behind the game. Teacher said, "This is exactly the situation when you carry hatred for somebody inside your heart. this stench of hatred will contaminate purity of your heart and you will carry it with you wherever you go."Teacher continued, "Now think for second, if you can not tolerate the unpleasant smell of rotten potatoes for just a week, can you imagine what it would be like to live with stench of hatred in your heart for lifetime??" 
Hatred of someone will be a burden to your heart to carry for lifetime. Negativity about someone will keep peace of your own mind and heart away from you. Therefore, forgiving others is best attitude to live a peaceful and happy life. 