You wake up and you find yourself not anymore the same person you were yesterday, they call it "the 180 degrees change" but I call it the "Re-born".
The Reborn is that point in your life when you fire up all your memories papers and all your past behind, and everything you knew before becomes ashes and dust now. Not everyone passes through that point frequently, some experienced it once and many never experienced it.
I think the main reason for that ultimate change point is the Pressure, our life is like matter and People are divided into Solid, Liquid and Gas. That Matter changes from state to state by external factors like Pressure and Heat.
Solid-type people are the most people facing the Reborn, as they are not flexible enough to face Life catastrophes but when they change to the Liquid state they learn and when they learn they become the most successful people in their environment as they are "The Liquid People of a Solid past".
Other Humans are like Liquid they are flexible and they can adapt the surrounding environment but as soon as the Heat around that flame they frustrate and surrender easily and Evaporate in the air and they are not "reborn", they are in the Zombie zone now.
Others are like gas, they aren't seen, and they don't effect or be affected.. Try not to be one of them.
When you reach That Reborn change point, do your best not to waste it.