Task: Determine the prevailing emotional tone of the tweet, categorizing it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that most accurately represent the tweeter's mental state.
Tweet: @RickHoffman_ And we are all so grateful for your perseverance! Happy Anniversary twin!
This tweet contains emotions: 
joy, love, optimism