It is a feeling very familiar to me, however my life is not going very well as yours is...but that really has no bearing on it, you could have everything and still be unhappy. But yeah not really sure a solution for feeling like that, I mean usually feeling alone is alleviated by having people who care or to interact with or whatever...when that doesn't work what are you left with? It is frustrating...but you certainly are not alone with that feeling.