Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: From My head to think it was better but obviously it's not #relapse #sadness #sickness #madness #misunderstanding
This tweet contains emotions: 
anger, disgust, pessimism, sadness