I am so sorry you are feeling sad. I don't have any answers really, just wanted you to know you are not alone. I do think people care, but sometimes they may have things going on in their lives which you are not aware of and are just not in a position to be of much help. People sometimes are scared and don't know what to say either when it comes to depression. As for your friend that always cancels on you, I think it might be time to let her know how much it upsets you and see what she says and if there is a I don't really care attitude then I would maybe start to think about just cooling that friendship for awhile. I hope things are better today for you, I know it's not the same but... I am here if you need to talk.