Self-concept refers to an individual's thoughts and feelings about themselves. It has dimensions like actual self, ideal self, and public versus private selves. People with interdependent self-concepts see themselves as connected to others, while those with independent self-concepts see themselves as autonomous. When there is a gap between one's actual and ideal selves, they are motivated to close it through their extended self, including possessions. Lifestyle reflects how people enact their self-concept through their activities, interests, and consumption behaviors. Market research measures self-concept and lifestyle to understand consumer behavior and identify opportunities for products to fulfill needs related to consumers' self-views.