You come into this world alone. You exit it alone. Stop using others to validate your existence and the depression ends. Keep relying on others to give your life meaning and you continue the never ending cycle of heartbreak and recovery. Make a choice. Learn from the pain and suffering and realize happiness is not the sole goal of life. You exist to experience a broad range of emotions. Pain and pleasure. So. Make the choice, only you can, man up, work out, build your own self esteem and be your own pillar of support. Or continue the viscous cycle. Your choice.