Task: Categorize the tweet's emotional expression, classifying it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that reflect the tweeter's state of mind.
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