Yes pessimists are mor affected to unjustice. And they never think that the things will go better. In my opinion, that's why things are never good for the pessimists. They never beleive that they will be good, so they loose wil to work them out.
That couldn't be further from the truth. If you always expect the worst, then when the worst happens, you say to yourself, "I knew it" or "I saw that coming." and it isn't such a big deal... if something great happens and you were expecting the worst, then the outcome is even more righteous. It's a win-win situation.