Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: Three more shifts then I start the next part of my tutorship in response #enjoyingthelastfewdays #excited  #newchallanges
This tweet contains emotions: 
joy, optimism