Task: Analyze the tweet's emotional connotations and classify it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best portray the tweeter's mental state.
Tweet: Trying to make a #better_world is #depressing when it's a #failure -__-
This tweet contains emotions: 
anger, pessimism, sadness