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: Happy 69th @StephenKing! May u keep haunting us for many years. #horror #writing
This tweet contains emotions: 
fear, joy, love