After I'd been training for about 5 years, my instructor told me, "Look, I've already taught you everything I know. Now it's up to you."
I thought that was insane. Here was a professional martial artist who'd been teaching and training in various arts for more than 30 years, and he's telling me he taught me "everything."
After another few years I started to get some insight into what he meant. There are a finite number of ways a human body can move or be manipulated. Various arts approach it differently, but it's the PRINCIPLE that's important, not the "technique." If you've internalized the principles, you don't need someone to prescribe a technique for every possibility.