Task: Analyze the tweet's sentiment and assign it to either 'neutral or no emotion' or one or more of the specified 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 #angry #emotionalrollercoaster
This tweet contains emotions: 
anger, joy, sadness