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: @darwinwatersons @pennyfitzger31 @gumballwatter15 ok but why tomorrow a horrible day, my day was great!
This tweet contains emotions: 
joy, optimism