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: when u havent learned to swim 🤔 but you keep working out so you're denser and less buoyant 😞 but swimming is scary 🤔 but also u cant swim 😞
This tweet contains emotions: 
fear, pessimism, sadness