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: @MHChat I think sadness is felt very strongly physically and mentally.  It feels like it takes over and it's hard to focus at work #MHChat
This tweet contains emotions: 
pessimism, sadness