Task: Determine the prevailing emotional tone of the tweet, categorizing it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that most accurately represent 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