Remember this, just because you think you know some things, that you are privy to insider knowledge or that you have a whole lot of abbreviations to your name or that you have a fancy grand title, does not mean that you know everything. Sure, you might claim yourself as an expert or that someone or some group of people may have given you that label but no one can know everything. For that reason alone, it just does not make any sense to be a pessimist because to do so requires a concrete proof, beyond a doubt to arrive to that conclusion. So if you cannot do that, then choose to be optimistic. Your life will certainly be more brighter and you never know what opportunities might arise because of that positive energy. Unless of course, you have an airtight case against it.