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: I'm way too busy and tired all the time to worry about my past and the things I should be regretting (but I never am).
This tweet contains emotions: 
anticipation, joy, optimism, sadness