A slight change to an affirmation could strengthen its power.

Here's the Michael Jordan interview (1991) on Saturday Night Live.

Examples of how you might structure an affirmation:

Up until now, I’ve been expecting perfection; now I’m striving for excellence.

Up until now, I’ve been scared of down-time; now I’m making it count.

Up until now, I’ve been afraid of public speaking; now I’m growing in confidence.

Up until now, I’ve been eating mindlessly; now I’m savoring food.

Up until now, I’ve been fighting change; now I’m learning from it.