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: If you want others to be #happy, practice #compassion. If you want to be happy, practice compassion.' Dalai Lama
This tweet contains emotions: 
joy, love, optimism