Task: Assess the emotional content of the tweet and classify it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best represent the tweeter's mental state.
Tweet: Do not be discouraged by a slowing sales market. This will test your business model and pinpoint #strengths and #weaknesses.' @Ken_Dunn
This tweet contains emotions: 
optimism