The phrase "a difficult opportunity" is correct and usable in written English.
It can be used to describe a situation that presents a challenging chance for growth or success, often requiring effort or overcoming obstacles.
Example: "While the project seemed daunting at first, it turned out to be a difficult opportunity that ultimately led to significant professional development."
Alternatives: "a challenging chance" or "a tough opportunity".
It was a difficult opportunity off Laxman, who was looking to on-drive Anderson, on in place of Bresnan.
Van Nistelrooy, with his back to goal, had just hooked a difficult opportunity over the bar when Real scored in the 12th minute.
Rosenior then had a difficult opportunity at the far post, which he volleyed wide.
Former skipper Westwood also had a let-off when Rayner, diving to his left at backward square-leg grassed a difficult opportunity, allowing the Bears batsman to pass his season's previous best score of 70.
Edin Dzeko's touch sat up nicely for the Spaniard and he made a difficult opportunity look easy by firing a wonderful left-foot volley into the bottom corner of Butt's goal.
Jordan then failed to hold on to a much more difficult opportunity of the either-they-stick-or-they-don't variety when Warner bludgeoned a return drive to his left.
Afghanistan presents an ideal but difficult opportunity.
The first was a difficult headed opportunity that came to him quickly at the back post.
Refocusing Digg was arguably one of the most difficult opportunities in tech, and the ambitious SCMP mission — powered by Alibaba — is arguably on at least an equal footing to that.
Whether he gives you new strategies for communicating with a boss who has an incompatible managerial style or helps you see that you're really interested in pursuing new opportunities, the right advisor can turn a difficult situation into opportunities for growth and learning.
And, says Heath, "We hoped that by solving such a difficult problem, other opportunities would present themselves". They did: Heath realized these nanowires could also serve as ultrasensitive biosensors.
