How to shift your thinking in the direction you want to be moving
Instead of making a 180 degree turn from what you are currently doing, the goal is to shift towards the direction you want to be going incrementally.
If you are always late, you could say you are not going to be late again. A better, more achievable option would be to get there earlier than your last time.
Examples of affirmations for boundaries:
No is a complete sentence
I can do things for myself first