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: Old saying 'A #smile shared is one gained for another day' @YEGlifer @Scott_McKeen
This tweet contains emotions: 
joy, optimism, trust