You Can't Change A Person!

I’m the first human created by God. As I took for granted the love that I received, I never gave love to others.
One day, God appeared before me and gave me a riddle.
Until I answer that riddle, I am unable to die.
This time, I will definitely find the answer. But… “Bwaa!” I reincarnated into the baby princess’ body?! I’m screwed!