Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: @paulsherard @margarethaynie wow I just realized how much of a sexist pig I am! I am truly sorry to anyone I offended
This tweet contains emotions: 
anger, disgust, pessimism, sadness