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: You dont have to feel grateful to be grateful, for it is written  ' all things work together for good'  for those who love God.
This tweet contains emotions: 
joy, love, optimism, trust