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: smiling through the stress :) :) :) :) :) :) :( :( :( :( :( :( :(
This tweet contains emotions: 
joy, optimism, sadness, trust