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Carp angling is much more simple than we make out. If you can put a bait the carp want to eat, on a spot on which they're prepared to feed, and the carp are there feeding - you'll catch them. The carp will feed somewhere every single day, so the trick is finding them and putting the right bait in front of them.
The best anglers are trying harder to achieve the above than other anglers imo. And while they're trying to achieve it they learn far, far more about the water and it's inhabitants than those that aint trying to achieve it. It's basically a virtuous cycle; the harder you work, the more you learn, the easier it becomes.
Assuming you know how to find a spot pretty much anyone has the capability to be a great angler. It is drive, or lack of drive, that lets people down (me included lol).