Determine the emotional tone of the following tweet: "I seem to alternate between 'sleep-full' and sleepless nights. Tonight is a sleepless one. 😕 #insomnia #anxiety #notfair". Use the provided emotions: anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust. Respond with the emotions you identify or "neutral or no emotion".
fear, sadness