Everyone has limitations, but no one, not Arnie, not Jack, not Tiger, has ever reached them. No one has ever been so good that they could not possibly have improved. If everyone had 10 hours a day to devote to golf, we would all be playing to scratch. If you want to play to a 4 handicap, do it. But realize that it will take a LOT of practice and a LOT of playing. (Not that playing a lot of golf is a BAD thing.

)