Task: Analyze the tweet's emotional connotations and classify it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best portray the tweeter's mental state.
Tweet: Ugh.. Why am I not asleep yet. Fml. I think low key I'm afraid I might miss something. #SleeplessNight #sleepy #restless
This tweet contains emotions: 
fear, pessimism, sadness