Task: Categorize the tweet's emotional expression, classifying 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 reflect the tweeter's state of mind.
Tweet: Like keep grinding boy your life can change in one year, and even when it's dark out the sun is shining somewhere...'
This tweet contains emotions: 
optimism