One of the central tenets of the Buddhist philosophy is the concept of interdependence.
The philosophical dimension of this concept focuses on the recognition that nothing has value in and of itself. Everything is composite, and everything is impermanent or transient. Everything undergoes a process of change, most easily evidenced in our own human lives.
We are not today the person we were physically, emotionally or psychologically, five or ten or twenty years ago. Why? Because the notion of “self” is a delusion. “We” are really nothing more than a composite or amalgam of systems and conditions. The “self” that we cherished when we were twelve no longer exists. Therefore, we can say that it had no essential value, since it was actually nothing more than an idea we had.