Please analyze the tweet "Yesterday , on 21 Sept. 2016 , i installed a new stratagem including audacity by rejoicing at Harbour tower,i will tenaciously follow up up." and classify its emotional content. Choose from the following emotions: anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust. If no emotions are detected, respond with "neutral or no emotion".
joy, optimism