Task: Assess the emotional content of the tweet and classify 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 best represent the tweeter's mental state.
Tweet: Good night, Twitter world! Wish you all good sleep / productive jovial days! :)
This tweet contains emotions: 
joy, optimism