Task: Categorize the tweet's emotional expression, classifying 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 reflect the tweeter's state of mind.
Tweet: When the lights shut off and it's my turn to settle down, my main concern...
This tweet contains emotions: 
anticipation, optimism, sadness