Marissa Mayer recently reflected on what she said went wrong at Yahoo when she was CEO.Elijah Nouvelage/ReutersMarissa Mayer recently reflected on Yahoo's struggles and eventual sale to Verizon.Mayer said Yahoo was simply too late to embrace the move toward mobile phones.She still remembers the compliment Yahoo cofounder Jerry Yang gave her as she left the company.When Marissa Mayer was brought on with high hopes to captain an already struggling Yahoo in 2012, it took five years of trying to revive the internet giant before she ultimately resigned.In a recent interview with Wired, Mayer said that looking back, "timing is everything" — and that Yahoo was simply too late to embrace the move to mobile phones."Yes, taking all those Yahoo products and putting them on mobile was a good idea, but it needed to happen five to eight years earlier than it did," Mayer said.Despite expectations that Mayer could turn around Yahoo, the company continued to struggle during her tenure.