The article didn't specify memories, just a reversion to a juvenile form and rebirth. For the sake of my OP, let's assume no memory transference. Just the biological rebirth of you.
As to the good and bad in life, there have never been guarentees in life. You play the cards you have and get what you get. Sometimes terrible and unfair and cruel, and sometimes great and easy. Usually somewhere in between with a mix of both.

Really? My memories in someone else's body isn't me either. There is the biological me at birth, then the conscious me of experience and memory. I think they both play a part of the older you, but being reborn as baby you is still literally the original "you" at this point.