What I'd say would be to try & focus on the positives. What I do is everyday I write one thing down that is positive for that day. Sometimes Its so hard to think of something, but you can always come up with 1 thing, even if its just the weather or something that has made you smile.
Give it a go, I think it helps
"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"