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: it gets better. without explanation; you just wake up one morning and you’re just happy, totally and utterly elated.
This tweet contains emotions: 
joy, optimism