Task: Categorize the tweet's emotional expression, classifying 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 reflect the tweeter's state of mind.
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