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: I've realized my anxiety is at an all time high when I'm in my office. I feel prisoned here and I pick up on bad energy.
This tweet contains emotions: 
disgust, fear, pessimism, sadness