Task: Analyze the tweet's emotional connotations and classify 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 best portray the tweeter's mental state.
Tweet: I believe the work I do is meaningful; my clients would agree but at the end of the day, I feel like a pawn, lost in this chaotic world.
This tweet contains emotions: 
pessimism, sadness