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