When we say things like " people don't change" it drives scientists crazy. Because 

change is literally the only constant in all of science. Energy… Matter… its always changing. Morphing. Merging. Growing. Dying. Its the way people try not to change that's unnatural. The way we cling to the way things were instead of letting them be the way they are.

The way we cling to old memories instead of forming new ones. The way we insist on believing, despite every scientific indication, that anything in these lifetime is permanent. Change is constant. How we experience change - that is up to us. It can feel like death, Or, it can feel like a second chance at life. If we open our fingers and loosen our grips, go with it, it can be like pure adrenaline. Like at any moment, we can have another chance at life. Like at any moment, we can be born all over again.