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: Our tone of voice: we're like One Direction, we're thoughtful and timid, yet playful
This tweet contains emotions: 
joy, optimism