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: Sometimes people leave you halfway through the wood. Do not let it grieve you, no one leaves for good. #youarenotalone #nooneisalone
This tweet contains emotions: 
optimism, sadness, trust