Please analyze the tweet "I'm also upset at my incorrect use of a comma. #grammar #struggle #hesitation #backtoschool 🎒📚" and classify its emotional content. Choose from the following emotions: anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust. If no emotions are detected, respond with "neutral or no emotion".
anger, disgust, pessimism, sadness