Penning Down Thoughts VI - Change

Sometimes some things happen to someone that changes them forever. For the good or for the bad they do not realize but they change forever. When they try to change back to their state before changing; they might be able to come back to their state before the thing that changed them happened; but -
Along the journey from where they were to where they come back, they leave a part of them in that place where they were because of those some things. They are never the same person again.
Each time these things happen, each time a part of them is left out at the place. And, then a time comes when they reach the no-return threshold. If brought back before they cross over to the other side, it might be possible to retain whatever unchanged part they have in them & this unchanged part is precisely located at the center of their chest, while the changed part of them finds home in their brain cells.