you know Kerry Packer was one of the biggest pessimists on the planet and he was the wealthiest guys in Oz. Those who constantly see all good are usually the ones that only see the upside and forget about how they are going to deal with the downside. Those type of people always lose their money.
The upside always takes care of itself it is the downside that one must always be concerned of. Lose your capital and you are out of the game Divros!