Task: Determine the dominant emotion in the tweet and classify it as either 'neutral or no emotion' or one of the eleven provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: Trying to make a #better_world is #depressing when it's a #failure -__-
This tweet contains emotions: 
anger, pessimism, sadness