Task: Determine the prevailing emotional tone of the tweet, categorizing it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that most accurately represent the tweeter's mental state.
Tweet: My #anxiety is rising tonight and I'm not sure why. Sometimes I wonder if I'm a magnet for any free-floating anxiety in the universe.
This tweet contains emotions: 
fear, pessimism