I'm not sure about my novel writing skill; still collection rejections from agents. However, my complex data and abstract modeling talents have always served me well. Since my teen years, I've been slowly building a fictional world along with all its peoples and histories. That leads to the issue of keeping track.
At first, I just wrote general notes in my notebooks. Occasionally, I wrote a short story, or part of one, to illustrate an event or notable personage. This was good for a start, but it is easy to get overwhelmed. My boxes and shelves are stacked with old notebooks, some from as far back as the 1980s.
Fortunately, I like to read history. The history folks are fairly good at organizing events and people. Tools such as timelines really help. Concurrent and convergent timelines start to get complex, but clearly illustrate how events happen at different place but the same time, sometimes coming together. Short biographies help too.
If you read more heavily into Tolkien's Hobbit books, and I assume you do, you see occasional references to books of information that only exist inside his fictional world. These tomes are written inside the story by the denizens there. This is a good example of something that I started doing.
While writing some historical notes about my world, it was sometimes easier to do it from the perspective of a person from that world. Many of the characters are of a group called Lovelos (IPA ,loʊ.vɛl'.oʊ). As I wrote their historical notes, I would make reference to their other interesting volumes. At first, this was just to amuse myself, such as referencing Royal Lovelo Intelligence Manual on Self Defense, Volume 7 Assassination. Making these asides also kept me from branching off into another set of notes at the time. Eventually, it became a way to keep the world notes themselves.
Since the Lovelos figure so prominently in my stories, they were good candidates for historians. As a result, I now slowly transfer the old notes, and write all the new ones from the histories of the Royal Lovelo Intelligence Service. By keeping the index in a spreadsheet, I can organize them. I assume that I will have the whole thing organized and complete-ish shortly after my three-hundredth birthday.
There are times when I need to note something that the Lovelos would not know. That is easy to handle for two reasons. First, most of the other peoples have at least some literate persons capable of chronicling the happenings of the day. Second, the Royal Lovelo Intelligence Service is not above copying or stealing the documents of other peoples. Their preferred way to handle this is to steal the document, copy it, and return it without the other people noticing.
Between timelines, short stories, and an official in-story chronicling agency, I can organize my notes and make them easier to review as I write more. If you have a world of your own, it may be worthwhile to do this yourself. Of course, if you are building your own world, it will take up quite a bit of time you should be spending in the real one.