Task: Identify the primary emotion conveyed in the tweet and assign it to either 'neutral or no emotion' or one or more of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best capture the tweeter's mental state.
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