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: #Worry, #doubt, #fear and #despair are the enemies which slowly bring us down to the ground and turn us to dust before we die.
This tweet contains emotions: 
disgust, fear, optimism, sadness