Do all good things fade in time?

Everything we believe in is through our perception. We are a descendent of everything we think & believe in. We are creators of our own self-worth, & it is only within ourselves that we can guaranty change. 

We must not dwell on what it is we can not change, nor ignore how we perceive something. We acknowledge what it is believe to be true, typically because it is what we believe is correct... But not necessarily. Although we can control ourselves, human emotions among others' can not be controlled. So, why does it seem that good things fade? It is because we believe it has, or have already started to believe a sense of loss. And, if it is within another it may not have to do with our actions being any different than they once were, but what has been expected... and, to me, is the root of all things that fade.