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: Time to go hit up the library - I have a lovely PILE of book reservations to collect this morning...  #books #reading
This tweet contains emotions: 
anticipation, joy, optimism