Gillian does mention how not revisiting classifications can lead to disasters such as the financial meltdown of 2008, but don't we all have our own labels? When was the last time you revisited what you think of yourself and your strengths?
I'm probably unusual in the amount of time I spend thinking about this and in all the personality tests I take to shed more light on this, but even I have personal classifications (aka, internal silos) I probably need to bust out of.
The one that comes to mind is "I'm not a salesperson."
I'm not, really, but if you've read Daniel Pink's To Sell Is Human, than you understand that we all are. And I've actually held a business development role which I enjoyed more than I expected to and did far better at than I expected to. So perhaps I'm not the traditional type of salesperson that can sell just anything...but that does not mean that I cannot sell.
And perhaps that silo has caused me to overlook opportunities in the past. Just today an opportunity to bust this silo came up and I'm considering considering it...so a step in the right direction but more work is needed.
There is of course a fine line between internal silo-busting and forgetting one's strengths, so perhaps the answer is to widen those classifications or look at the circumstances in broader terms. Perhaps one needs to carefully weigh all the pros and cons to see if an opportunity is a bad fit or an internal silo.
Do you have internal silos that need to be busted so that you can reframe how you see yourself?