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: Got to be up in 4 hours to go back to work #cantsleep #excited #nervous
This tweet contains emotions: 
anticipation, fear, joy