Task: Identify the primary emotion conveyed in the tweet and assign it to either 'neutral or no emotion' or one or more of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best capture the tweeter's mental state.
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