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: Nothing lovelier than your great mate sending the most joyful and sweet pic - Thankyou #amy @artburstltd XXXX
This tweet contains emotions: 
joy, love, optimism