Task: Determine the prevailing emotional tone of the tweet, categorizing it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that most accurately represent the tweeter's mental state.
Tweet: This is the first time I've written anything on this series in over two years, so I'm checking back in for one last nightmare.
This tweet contains emotions: 
fear, pessimism, sadness