Examine 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 determine which of these emotions are present: anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust. If there are no identifiable emotions, reply with "neutral or no emotion".
anticipation, disgust, fear, optimism, sadness