Who could you call at 4:00am if you needed to talk about your troubles? If you can immediately give a name then chances are you will live longer and happier than someone who has no close confidantes. Loneliness is seriously damaging. One of your life’s goals must be to build a support systems that will see you through the bad and celebrate the good. You need to care about people but in order to be truly happy you also have to develop the capacity to be loved. Let people in to share your life. Appreciate them when they care.