Task: Categorize the tweet's emotional expression, classifying it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that reflect the tweeter's state of mind.
Tweet: @excalibater I'm very shy irl and lately I feel like everyone's doing their own thing and I don't fit in anywhere and I feel lonely :(
This tweet contains emotions: 
fear, pessimism, sadness