As you ease your way into this concept, keep in mind that all time is matter.
Pieces of what you thought were real, are only fragments arranged in a particular fashion.
To grasp this concept you need to let go of all concepts of time as you have known it.
Find within yourself a particular moment that was of great importance at the time it happened. Does it have the same impact now? In this moment?
You made it important to teach a particular lesson dictated by your soul.
Once you find that what once was is no more, you can move within events as they find you.