We can say that only to the extent to which a person feels belonging is he capable and willing to function fully; is he capable and willing to contribute and to participate in a give and take. Only when he feels belonging does he have, as we call it, a “high tolerance level” that means he can take in his stride whatever may come without withdrawing or without becoming antagonistic. Adler always said that we are constantly tested to the extent to which we feel belonging, to which we have social interest. And the crises situation which comes to every person on a different level and in a different situation is just the limit of our social interest. Rudolf Dreikurs, Social Interest in Children