Make a pact to start with a clean slate and new beginning to see if you can still have a happy future. "One of my favourite techniques is to practice intentionally forgetting all the negativity that has happened together and only remembering the good times. One of the big issues at the end of a relationship is there is so much resentment, animosity, and general malaise that negative thoughts abound throughout the day," says Mattenson. By practising selective amnesia, you can let go of the negative past in order to live in the present more fully.