True "X Factor" isn't a single remarkable quality. It's the multiplicative effect of possessing several rare skills and traits that don't typically coexist in one person. The more contradictory these traits are (e.g., Dolly Parton being a "bombshell" and a "business mogul"), the more compelling the individual becomes.
Most people adopt "off the shelf" personalities based on their demographics, making them predictable. To capture attention and be memorable, you must break these patterns. Combine interests and traits that defy stereotypes (e.g., a trucker-hat-wearing vegan who codes), which signals high agency and independent thought.
The parts of your personality that feel "weird" or don't fit in are the very source of your exceptionalism. Leaning into these differences, rather than suppressing them to conform, is what allows you to break patterns and develop an authentic "X Factor." These are the traits others may find odd but which ultimately define you.
Simply "being yourself" is insufficient to achieve stardom. You must first be exceptionally good at your core craft. Many skilled people fail to stand out because they lack a unique persona, but no amount of personality can compensate for a lack of fundamental excellence. X Factor is the multiplier, not the base value.