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: 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