There is no such thing as "my element". That is a concept from TV, movies, and fantasy novels. Those are great forms of entertainment but they are not a valid way of learning anything about magic.
You do not have one specific element. You might have an affinity for one element over the others, but that's all. If that makes you want to work with that element more than any other, then do so. But that does *not* mean that you have no connection to the other elements.
Remember, magic is not an inherent power. It is a skill, like anything else. Certain people have a talent for it, just like people have talents for music, art, athletics, math, languages, etc. But that's all. Apply the same logical and critical thinking to your magic that you would apply to anything else. If you were good at math, for instance, you wouldn't spend time and effort looking for "your function" and trying to decide if you should add, subtract, multiply, or divide. You would learn them all, even though you might enjoy one over the others. It is exactly the same with magic.