being sad is a thing you can never get rid of
you can develop depression (which you are cursed with for life) but you can never get rid of the feeling no matter how hard you try. You may have friends and family and many who love you.... but you are still depressed. I say its like getting stabbed. you're perfectly fin then a knife stabs you. Someone can try to cheer you up but you still feel the knife and it hurts.