Solskin / Getty ImagesWall Street's top performers are hard workers who tend to work long, intense hours.Business Insider asked its 2024 class of Wall Street stars about how they stay mentally sharp.Here's how finance professionals are unwinding and staying grounded.Call it superstitious, but Mark Zhu, a 34-year-old managing director at Blackstone, likes to start every day the same way. He has two Trader Joe's yogurt cups, one banana-flavored and one blueberry-flavored, eaten in the same order, followed by his supplements, which also have their specific sequence.