When something amazing happens to you,sharing the happiness of the occasion② with friends doubles③ your joy.On the other hand,in times of trouble and tension and when our spirits are low,talking about our worries and fears with friends lightens the stress.Moreover④,we may even get some good suggestions for solving our problems.  From time to time,we are insensitive(漠不关心的) and behave in a way that hurts someone’s feelings.Afterward,when we feel guilty and discouraged,friends can reassure us.This positive interaction is therapeutic(有益于健康的),and much less expensive than visits to a psychologist.