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: You can't fight the elephants until you have wrestled the pigs. #quoteoftheday #relentless
This tweet contains emotions: 
optimism