God creates everything with for a reason, for good. It would be a grave mistake to think about the past and then get sad. God has created the past auspiciously and it is already done. One would live the same destiny every single time even if he is sent to this world for a thousand times. People would not remember anything negative about their past in Heaven. Once a believer targets the good pleasure of God, he would not attach any importance to the past. A believer should put his trust in God and keep his heart at ease. - Harun Yahya