Affirmations definitely work when done correctly. For most, affirmations are about repeating a set of words that force a desired result by continuous repetition.
Affirmations are about aligning your Inner disposition and beliefs towards a desired result. Although affirmations are repeated the process is more about realizing and practicing a different point of view relative to a desire.
We tend to forget that all things/manifestations originate as ideas. Likewise, the manifestations of our desires have their origins in new ideas/thoughts as well.
Affirmations allow us to start fresh/reset our alignment towards a solution and away from the unwanted. This is the first step towards manifesting a desired result.
Doing affirmations does not remove personal responsibility for results or preclude work and effort. However, doing affirmations allows us to align for the most efficient and optimal outcomes available in the moment.
Affirmations allow us to become mentally prepared to receive inspired thoughts that guide us most efficiently to the results we seek.