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: I understand now...if it's not pleasing to the ear...then it ain't what you want! I'm so so tired!!
This tweet contains emotions: 
anger, sadness