Task: Identify the primary emotion conveyed in the tweet and assign it to either 'neutral or no emotion' or one or more of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best capture the tweeter's mental state.
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