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: Hello my dear friends, I will be back online this Friday night. I miss you! #sober #sobriety #recovery
This tweet contains emotions: 
joy, optimism, sadness