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: @mdthib This is so lovely! Or I am frightened, not sure which! But, wow!
This tweet contains emotions: 
fear, joy, optimism