Dr. Dan Siegel, clinical psychiatry professor at University of California–Los Angeles has spent much of his career investigating why “the mind has a mind of its own.” Much of the project of life, and the essence of well-being, Siegel argues, is to have a well-balanced brain and a harmonious mind.
Source: Science of US, December 12, 2016.
Siegel says that our relationships help form our mind, something that personality and relationship psychologists would certainly agree with. If that is true, then a given person is much more relational and interdependent than individualism would lead you to believe.