I sometimes feel that I am alone in the world too, but I am conquering it I think. Have you tried seeing a counsellor? I have for the last few months & it has really really helped me. You could also try writing out how you are feeling.
"The Optimist sees the rose and not its thorns; the pessimist stares at the thorns, oblivious of the rose."
"Life isn't about waiting for the storm to pass, its about learning to dance in the rain"