Task: Assess the emotional content of the tweet and classify it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best represent the tweeter's mental state.
Tweet: God just replaced my sadness with laughter, can't go the whole day sad ...
This tweet contains emotions: 
joy, optimism, sadness