The affirmation is a repetition of a phrase over and over again, so your mind internalizes it and it becomes part of what you’re thinking.
Use shorter phrases and repeat them multiple times. (e.g., a single sentence and repeat it non-stop for at least 5 minutes daily)
Be mindful during affirmation
Think about what you’re saying. Contemplate how it is true
You don’t have to say words out loud