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: @GOtvNg CN seems like you only appreciate good reviews. No apologies to my concern years ago.
This tweet contains emotions: 
joy, optimism, sadness