Task: Assess the emotional content of the tweet and classify 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 best represent the tweeter's mental state.
Tweet: It's amazing how something gets stuck in your head, and you can't shake a memory...  Sometimes, I miss people a lot.  Wish they knew.
This tweet contains emotions: 
joy, sadness