This affirmation works as a way to separate yourself from the subconscious mind/ego programming and to bring awareness into the now. Use it when you are feeling down.
Breathing strategy to calm panic/anxiety attack: This causes an autonomic nervous system shift from a sympathetic (fight or flight reaction) state to a parasympathetic response.
This Affirmation rather than denying the existence of negativity confronts you with a choice, and works on both developing the Habit of being Positive and simultaneously re-programs the subconscious mind.
Controlling your Thoughts during Meditation with affirmations can help with focus in the begging stages, and the wonderful thing about affirmations is that the more you use them, the more they support your goals..