You can find your element through a variety of ways. Your sign feom the Greek zodiac has an element associated with it, a chiromancer can tell you what elements are present in your palm, and even an element that corresponds with your personality. If you scan your hand or take a picture of ut, I coud read it if you like.
Personally, the element in my palm, the element associated with my zodiac sign, and the element that best defines my personality is Air. However, many people can be represented by a combination of elements.