Task: Determine the prevailing emotional tone of the tweet, categorizing it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that most accurately represent the tweeter's mental state.
Tweet: Lea doing a mini set tour of glee my heart just cried tears of happiness and sadness
This tweet contains emotions: 
joy, love, optimism, sadness