Task: Analyze the tweet's emotional connotations 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 best portray the tweeter's mental state.
Tweet: The difference between someone's selfies when they're happy vs. unhappy is absolutely amazing.
This tweet contains emotions: 
joy, optimism, surprise