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: Failure is a part of success. You can't experience the joy of success with also experiencing failure. #bethehero #success #failure #joy
This tweet contains emotions: 
joy, optimism