Task: Analyze the tweet's sentiment and assign it to either 'neutral or no emotion' or one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: Smile at people and see what happens.  I think you'll be surprised #smile more #surprisepeople #influenceinternational
This tweet contains emotions: 
anticipation, joy, optimism