Looking other peoples' glorified Facebook lives might send you into depression because we often judge our own worth stacked up against other people. Our self of sense is tied into a competitive game. If you can realize your self worth isn't defined by how you measure up to society's standards, your pain lessens in this area. If you can on top of that take some joy in others' success and happiness, even if it is a very minors sense of satisfaction; you jealousy will wane and happiness germinate.