Task: Categorize the tweet's emotional tone as either 'neutral or no emotion' or identify the presence of one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
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