Your body is a whole, if you think positively the rest of the body is affected.
Positive thoughts lead to positive emotions and positive behaviors.
In the long run, it will lead you to see the world as more positive and create opportunities for yourself. People who focus on the positive will also pay attention to what is positive.
This will permeate the whole person’s life because it automatically becomes a spinoff, where positive leads to more positive.
In other words, you can actually say that you become what you think.