Someone did a class on this not too long ago. From what I recall, I believe it is based on your likes and which one you are drawn to. Some people love swimming and boating which goes with water and others like to gather herbs from the earth and deal with nature on its physical level which would go with the earth. I do not recall the other ones. If you dont get more responses, e mail me and I will look for the thread with the element class.
I do like swimming but i prefer air,because some times when i'm angry the air become so strong,it not happening each time i'm angry but sometimes it will be,i'm enjoying my times when it's windy day,i feel so comfortable.
But what element can help?