There's a new shop in Canterlot with a unicorn that is said to have made a new magic spell to help you forget memories. Some memories need to be forgotten and everypony that tries it says they can't even remember what they wanted to forget in the first place. There are a few rules to this though. First make absolute certain that you are 100 percent sure that you want to forget this memory and second… never EVER stay in a memory that is being erased…
Pleasant forgetting!