 There's an infinite number of things to learn as a designer. Let's get into it. For juniors, you want to learn design tools, processes, and principles. For mid-level designers, you want to learn workshops, the development process, UX frameworks that can be applied to specific problems. For senior designers, you want to learn system design, product strategy, and navigating people and organizations. For UX leads and UX managers, you want to learn culture design, people management, establishing influence. For staff and principal designers, you want to learn organizational design, future thinking, and the economy. So where are you on this scale? Are you proactively learning these things?