How should I rewrite my book?

#1
I started writing a book called mage hunter on here. I am 25 chapters in found my style at around chapter 20 and I want to rewrite the first 10 chapters especially and add a prologue. I originally planned on making 100 chapter and ending a major arc before doing a rewrite what would be best?
Everyone is born lonely, this is the truth to life. Unfortunately, most people refuse to accept the truth. They hide in their societal roles, and indulge in their weaker desires. Only by accepting your loneliness can you become something true and worthwhile.