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: Wish I was a kid again. The only stressful part was whether Gabriella and Troy would get back together or not. #hsm2 #nightmare
This tweet contains emotions: 
fear, pessimism, sadness