Well I'm not really talking about despair am I? You said you choose to concentrate on the good. I'm saying that if everyone in society just concentrated on the good the bad would never be solved.
You say you can "act to lessen the suffering around you". Doesn't that imply that you're actually concentrating on the bad, at least a bit? How do you disregard the bad and act against it at the same time? You obviously, self-admittedly care about the bad at least enough to do something about it.
You kind of changed your story and then held it against my argument.... and ended it with an argument that the people who despair are to blame for the world's problems, which is a bold and egregiously wrong thing to say.