Action is the foundational key to success.
Indeed, it is. Because you know that sitting on your hands and hoping the skills and knowledge assimilation will happen by osmosis is only imaginary action.
But I know you’re up for the real action, though. I know that in your current world of work, or the one that you were just in before, you pushed yourself to learn other skills that may or may not have immediately impacted the core technical work you were doing. But it made you more valuable nonetheless. Maybe it was giving lunchtime presentations to your peers and supervisors ...