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: Life is too short to be jealous, hating, keeping up mess, and worrying about things that do not concern you.
This tweet contains emotions: 
optimism