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: He's seriously so frustrating sometimes! (╯°□°）╯︵ ┻━┻ #ugh #raging
This tweet contains emotions: 
anger, disgust, sadness