As a psychiatrist I have seen only minor success with positive affirmations. Repeating something you don't believe is unlikely to change your mind. Changing you mind actually changes your feelings.
Also I am certainly not trying to put anyone down, but most women are not heart healthy in the upper plus sizes. I'm saying that from experience! A plus size model, therefore, can give you many great tips on how to love your body, but I'm not sure if Ms. Parrish is heart healthy. If she is a heart healthy plus size model her words will have even more meaning.
Overall I was more excited by the title of this article than by the article itself.