Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: Never fear the want of business. A man who qualifies himself well for his calling, never fails of employment.
This tweet contains emotions: 
fear, optimism