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: TheNiceBot: WSJNordics You make the world a more joyful place. #TheNiceBot #MPN #DemiLovato
This tweet contains emotions: 
joy, love, optimism