In the book "Money is My Friend", by Phil Laut, he actually suggests saying affirmations three ways:
1)I am getting better and better
2)You are getting better and better
3)George is getting better and better
for reasons stated in the book:
"The purpose of using all three persons in affirmations is to make it easier to discover and change your negative ideas no matter where they came from - whether you thought them up yourself, whether someone else told them to you or whether someone else said them about you"
Hope that helps.
George