For the tweet "I feel ghastly and I'm really hoping it's just a post-birthday slump. Back to full research mode tomorrow either way.", classify the emotional tone using the following list: anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust. If no emotion is discernible, state "neutral or no emotion".
anticipation, disgust, fear, optimism, sadness