Positive thinking is good. However, it won't be possible to have a positive attitude if your microbiome, biology, your body is not fed with the proper nutrients. Positive thinking will not overcome malnutrition.

Positive thinking is good. However, it won't be possible to have a positive attitude
if your microbiome, biology,
your body is not fed with the proper nutrients. Positive thinking will not overcome malnutrition. 

Positive thinking will not overcome the negativity from other people who
suffer from malnutrition and poor upbringing.