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: Serious-looking folks suffer from unused smile muscles \n\n #behappy  #hatersgonnahate
This tweet contains emotions: 
joy, optimism