Task: Categorize the tweet's emotional tone as either 'neutral or no emotion' or identify the presence of one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
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