Task: Analyze the tweet's sentiment and assign it to either 'neutral or no emotion' or one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
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