How do I fix a forehead dent?

When i was 13 i was attacked by a metal lunch box by A girl who was aggresive and she left a very visible dent which has been there ever since on the right side of my forehead which i have deeply worried about ever since it had happened and it really affected me because when i looked in mirrors i can see the dent and people recognize it and talk about it as if they are mocking me i have always had in mind any ways to fix this is it possible ?