Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: When the lights shut off and it's my turn to settle down, my main concern...
This tweet contains emotions: 
anticipation, optimism, sadness