Task: Analyze the tweet's emotional connotations and classify 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 best portray the tweeter's mental state.
Tweet: So unbelievably discouraged with music as of late. Incredibly behind on Completing my album. Not digging this at all.
This tweet contains emotions: 
anger, disgust, pessimism, sadness