The phrase "about how challenging it" is not complete and lacks clarity in written English.
It can be used when discussing the difficulty of a particular task or situation, but it needs to be part of a more complete sentence for clarity.
Example: "I want to talk about how challenging it can be to balance work and personal life."
Alternatives: "regarding the difficulty of" or "concerning how tough it is to".
They talked about how challenging it was to decide whose cultural "rules" were paramount when making business decisions.
Tired and bedraggled the next day, he recalled thinking about how challenging it can be to adapt to sleeping with another person.
Twins Manager Ron Gardenhire was honest about how challenging it was to try to concoct ways to quiet the Yankees, saying they were "so dangerous that you just try to finagle your way through it half the time".
Owning a business is everything that you have heard that it is, and there are plenty of articles online about how challenging it is, and the qualities of a great entrepreneur, what it takes to make it, etc.
The next day, we talked about how challenging it would be to wholeheartedly believe in an extreme diet, only to have friends and family try to talk you out of it.
At the forefront of every conversation that I've had about Nas' latest release, is praise for "Daughters," the single about how challenging it is to raise a daughter in today's hip hop society, where he actually questions and criticizes the ideals of the culture he's played such a prominent role in creating.
I was a wreck for those first two years and now I'm still occasionally a wreck, but not about the divorce... more about life and how challenging it is.
Flowe and his Upland teammates are about to find out how challenging it is to keep track of Gable.
But the inclusion of the paragraph about cultural industries that passed Thursday "summarizes how challenging it will be to reconcile the goal of raising growth by breaking down barriers with the tensions and political demands that crop up at the more local level," said Ms. Schaake, who advocates a far-reaching deal between Europe and the United States.
For example, I just came back from a customer visit on the East coast recently and had an opportunity to meet with the CIO, his CTO, and other members of his team, and we spent an hour over breakfast talking about the move to the cloud and how challenging it is for an organization that is continuously in an M&A mode to make that move to the cloud modernizing platforms.
As it happens, I visited UCF in October 2005 to speak with students and faculty about cheating, and I was struck by how challenging it was to foster academic integrity at such a large university -- a place where the faculty cannot possibly know the names of all, or even most, of the students in their big classes.
