Every minute of the work day is an opportunity for investment for us as developers. During this time, we can make a conscious decision to grow in our craft or instead chose to stagnate. Sadly many developers make the decision to get comfortable with a set of skills and not push forward. Many organizations are filled with these developers.
There is an alternative to this. Many developers actively choose to invest their time in targeted efforts to mature in their craftsmanship and innovate their technical skill set. To the surprise of many tech bloggers out there, this process often includes growing in areas which are not tied to a specific language or platform.