You've put your time into your functional area, you've achieved some success, and then sometimes it hits you: you want something broader, something more, something different. It's time to transition your career! Even though you might feel daunted, there are ways to do that, even when you are advanced in your career. Three tools for you: 1) Build your skills; 2) Translate your experience; 3) Engage your network.
Being smart and great at your job is only part of the equation for success - and not the biggest part. You also need to have credibility and the support of those around you. Getting that support - especially if, sadly, you have alienated people already - takes effort. Three tactics to help: 1) Get sponsors; 2) Create positive buzz; 3) Challenge productively.