Analyze 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." and indicate which emotions from the list (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) are expressed. If no emotions are found, answer with "neutral or no emotion".
anticipation, disgust, fear, optimism, sadness