Task: Determine the prevailing emotional tone of the tweet, categorizing it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that most accurately represent the tweeter's mental state.
Tweet: Defining yourself in terms of opposition, i.e. the clouded mirror phenomena, is almost always a mistake.
This tweet contains emotions: 
anger, anticipation, disgust, pessimism