-the first, the social relationship very good for us and loneliness killed
-it turns out that people who are more socially connected to family, to friends, to community are happier, they are physically healthier and they live longer than people who less well connected. and the experience of loneliness turns out to be toxic. people who isolated than they want to be from others find they are less happy, the health declines earlier in midlife, their brain functioning declines sooner and they live shorter lives than people who are not lonely, and the sad fact is that at any given time, more than one American report they are lonely.
and we know you can be lonely in crowed you can be lonely in a marriage, so the second big lesson we learn is that it's not just the number of friends you have, and it's not whether or not you are in a committed relationship, but it's the quality of your close of relationships that matter