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: @RickHoffman_ And we are all so grateful for your perseverance! Happy Anniversary twin!
This tweet contains emotions: 
joy, love, optimism