That was about a year and a half ago. He said that he needed time to mature and be ready and says he's ready now. That's a sign of maturity and I think to beat Golovkin, you need to be mentally focused just as much physically. I think knowing when you are ready is a huge thing in a boxer's career because it means that you're not buying into your own hype, which can be detrimental (see Berto, Broner, Garcia).