Heart necklace

What would it be if humans could change what they feel the same way we can change the picture in a heart necklace? and we could simply throw whatever hurts us and move forward easily but at the same time we wouldn't learn to go trough pain and live with it,though it MIGHT be for the better,who knows?
I really went and started to play with the color of the shadow,and I actually love the way it looks so I might just keep doing it like this ^^ 

Please do not use the drawing or the oc without my written permission. :3