People who feel good about themselves, deal effectively with life's challenges, and have positive social relationships are known as

I believe the answer is: psychologically healthy.

People that are psychologically healthy. generally have a high satisfaction with their own life. This positive outlook would benefit them because it make them look sociable and attract a lot of people to form a group that would bring out the best from one another.

6, 4, 5, 1 are true. the others are false.