Task: Evaluate the tweet for emotional cues 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 indicate the tweeter's state of mind.
Tweet: Been up since 4am. Too scared to go back to sleep #nightmare — feeling scared
This tweet contains emotions: 
fear, pessimism, sadness