Task: Categorize the tweet's emotional tone as either 'neutral or no emotion' or identify the presence of one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: we never taste happiness in perfection, our most fortunate successes are mixed with sadness. #success  #perfection #fortunate #mixed
This tweet contains emotions: 
joy, optimism, sadness