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'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