In this Q&A Mark Crossfield Q&A, Mark is asked do amateurs change their Golf Balls to often and does it make a difference.
Mark has himself only ever used the same ball himself the Titleist Pro V1X. Mark does think players change their balls to often. Mark discusses how there is a misconception around range balls and how different ranges use different balls and the ages and quality will also come into effect.
The ball will potential making a bigger difference to your game than changing your shaft.