The most fundamental skill: Intentional learning and the career advantage — from mckinsey.com by Lisa Christensen, Jake Gittleson, and Matt Smith
Learning itself is a skill. Unlocking the mindsets and skills to develop it can boost personal and professional lives and deliver a competitive edge.

Excerpt:

This article, supported by research and our decades of experience working as talent and learning professionals, explores the core mindsets and skills of effective learners. People who master these mindsets and skills become what we call intentional learners: possessors of what we believe might be the most fundamental skill for professionals to cultivate in the coming decades. In the process they will unlock tremendous value both for themselves and for those they manage in the organizations where they work.

Our ability to reflect is threatened on many fronts. Being overscheduled, overworked, and overloaded affects our ability to pause and assess our circumstances and performance. But the noisier the world around us, the greater the need for dedicated reflection time. Intentional learners not only engage in reflection but also, in many cases, ritualize it. They create consistent and predictable patterns, both for when they will reflect and what they will think about. They establish strategies for capturing these thoughts and referring back to them often. By relying on ritual, learners reduce the number of decisions associated with reflection (for example, when, what, and how), so it becomes easier to return to the practice repeatedly.

From DSC:
That last quote (re: taking the time to reflect and to think about one’s thinking) brought the power of learning journals to my mind.