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: I gave up on the U20 Rugby bet on the Roosters!  #nrl
This tweet contains emotions: 
pessimism, sadness