For small memories—little slights, insults—you relived them again and again until they were neutralized, until they became near meaningless with repetition, or until you could believe that they were something that had happened to someone else and you had just heard about it. For larger memories, you held the scene in your head like a film strip, and then you began to erase it, frame by frame. Neither method was easy: you couldn’t stop in the middle of your erasing and examine what you were looking at, for example; you couldn’t start scrolling through parts of it and hope you wouldn’t get
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