Task: Determine the dominant emotion in the tweet and classify it as either 'neutral or no emotion' or one of the eleven provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: I'm okay, dont worry. I wish i'd been a better kid. I'm trying to slow down. I'm sorry for letting you down.
This tweet contains emotions: 
fear, pessimism, sadness