Another great statement from Scott Guthrie
Developers (good and bad) can grow stronger by stretching themselves and learning new ideas and approaches. Even if they ultimately don’t use something new directly, the act of learning it can sharpen them in positive ways.
Change is constant in the technology industry. Change can be scary. Whether you get overwhelmed by change, though, ultimately comes down to whether you let yourself be overwhelmed. Don’t stress about having to stop and suddenly learn a bunch of new things – rarely do you have to.
The best approach to avoid being overwhelmed is to be pragmatic, stay reasonably informed about a broad set of things at a high-level (not just technologies and tools but also methodologies), and have the confidence to know that if it is important to learn a new technology, then your existing development skills will mostly transition and help. Syntax and APIs are rarely the most important thing anyway when it comes to development – problem solving, customer empathy/engagement, and the ability to stay focused and disciplined on a project are much more valuable.