Your astrology element does not always fits you, so it is not a good point. The perfect thing to do is to meditate and try to establish connections with every element. The connection which you will feel to be the stronger will be with your element:)
Think about the 4 elements and see which element suits you the best,yes your zodiac element could be a good place to start,but think about all elements and see which one gives you the most "pull" and that would be the element that suits you and your Heart(the very source of your power)
Also you may be drawn to more than one element. Many people are. It's best to develop with all elements, not just one. Like others have said meditate and feel the element that draws you the most but try not to ignore the others. Hope this made sense and helps.