Examine the 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)." and determine which of these emotions are present: anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust. If there are no identifiable emotions, reply with "neutral or no emotion".
anticipation, joy, optimism, sadness