Not only that, but if you choose to learn on your own time, finding a lesson to fit in your daily routine is also tricky, especially if you're caring for a family or have other commitments. Couple that with uncertainty about what to learn next, it can become overwhelming just to get started.
Very recently, I started working on a project[1] to address this exact issue. The project is to help established software engineers progress their careers, learn new concepts, and refresh their existing knowledge with daily bite-size software engineering lessons designed to fit in their daily routines.