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: I’m so glad I’m not like some of the sad people online who gossip and bully others for their entertainment because they have no life.
This tweet contains emotions: 
joy, optimism, sadness