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: i swear to god the worst drug is loving someone. physical withdrawals aren't that bad, emotional withdrawals sting a little more
This tweet contains emotions: 
pessimism, sadness