Having a good morning routine is the key to a successful day, according to Cindra Kamphoff , Ph.D. That doesn't just mean eating a healthy breakfast or avoiding screens , says Kamphoff, founder of the Mentally Strong Institute and a mental performance coach who's worked with Olympians, NFL teams and Fortune 500 CEOs. Instead, she instructs her clients to practice a four-part mental technique that provides "a way to start your day with positive energy and a positive focus," Kamphoff tells CNBC