Task: Categorize the tweet's emotional expression, classifying it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that reflect the tweeter's state of mind.
Tweet: @RickHoffman_ And we are all so grateful for your perseverance! Happy Anniversary twin!
This tweet contains emotions: 
joy, love, optimism