Changeofheart

9 clues
Earth
Conversion
Second thoughts
Attitude reversal
Decision alteration
Reversal in attitude
Profound shift in outlook
Cardiologist's drastic remedy?
2008 Jodi Picoult novel ... or a hint to the puzzle theme
Similar answers:
Aceofhearts
Achange
Andchange
Andchangeshim
Andwontchange
Archangel
Archangels
Arequickchangeartists
Armaniexchange
Attitudechange
Bigchangesin
Billchanger
Billsofexchange
Boiledchange
Bookofchanges
Cdchanger
Change
Changeable
Changeafinn
Changechange