No one has an element. How could you "have" an element. Do you mean like having one in possession? The elements aren't attainable in that way. The elements are transcendent things you can't own something that's a basic force and is really not in just one place.
You are not an element. That is a ridiculous lie created in the movie The Craft. The elements are states of energy. All these states of energy combine to make up creation, including you. Instead of trying to focus on an element, you may want to learn what the elements really are and learn to balance them in your life and your magical practice.
Having an element is like having a favorite color. It's interesting but truly means nothing as we are made up of and are connected to all of the elements rather than just one. Your star/zodiac sign will correspond to an element if you're interested in knowing that yet it isn't important overall.
Example: I love the wind and I'm a Libra so I say my element is wind/air yet it's no more important than the others. It's just a matter of picking my favorite. I'm also a realist and can be well grounded at times yet also contradictory a dreamer so I could say my element is also earth. In the end I'm all four or five primary elements melded into one human being. If you examine each element and the personality traits related to them you will see that they all correspond to you.