For every day we don't unlock our own value, we remain plugged into our other identity. I twittered this sentiment, but I believe it applies to a lot of you. You have ideas and thoughts and realizations that rise above what you're called upon to accomplish in a given day.
You can choose a few paths: One is to just do what you're given to do, go home, and wonder why life hasn't dropped off a big fat bag of cash and destiny on your doorstep. Another is to fight the system at every turn and to rail against everyone that they don't "get it" and that you're smarter than all of them, no matter how it looks right now.
Or you can work on your secret mission. Realize that you're different. Cloak some of that during your day-job hours by doing more than is necessary without drawing much attention to the fact that you're doing it. If your workplace is ripe for change from within, be that agent quietly. If not, then work on what you will do outside of what you're paid to do to build on that secret mission.
The point is, there's what you take to be reality, and then there's what you make to be reality. The more you work on the latter, even if it's your secret mission, the more you can grow your abilities, find ways to satisfy what you know is true, and move into bigger things.
Or you can complain about how "everyone else doesn't get it."
To prove you're not crazy, I recommend reading Richard Florida's Rise of the Creative Class: And How It's Transforming ...