proclivity
A natural tendency to do or like something often.
A proclivity is a natural tendency or inclination toward something. If you have a proclivity for mathematics, you find yourself drawn to numbers and patterns, solving problems for fun even when you don't have to. Someone with a proclivity for adventure might always volunteer for the challenging hike or want to explore an unfamiliar trail.
The word often describes built-in preferences or habits that feel almost automatic. A student with a proclivity for daydreaming might find her mind wandering during lectures no matter how hard she tries to focus. A friend with a proclivity for organization naturally keeps his desk tidy and his homework filed by subject.
Proclivity works for both positive and negative tendencies. You might have a proclivity for kindness (automatically thinking of ways to help others) or a proclivity for interrupting (jumping into conversations before others finish speaking). The key is that it feels natural rather than forced.
When you notice your own proclivities, you learn something about yourself. Understanding that you have a proclivity for staying up late can help you plan better. Recognizing a proclivity for impatience can give you a chance to work on developing patience.