Task: Determine the dominant emotion in the tweet and classify it as either 'neutral or no emotion' or one of the eleven provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: Having a baby born too soon is #lifechanging 6 years on and it feels like only yesterday #sad #happy  #emotionalrollercoaster
This tweet contains emotions: 
joy, love, sadness