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: @MariamVeiszadeh why sick. I am rejoicing that it is only half
This tweet contains emotions: 
joy, optimism