What you need:
A candle (any color, height, type, etc)
Something to light the candle with
A bowl of water (any amount of water will do)
A fan (or any other object affiliated with air)
A rock or leaf or soil
A dark room (bathroom works best for me)

This only lets you see which element you have between fire, water, air, earth, and darkness. If none of these have any real "connection", your element may be something else. Will post another element finding spell soon.

Step one: Collect your items and go to a dark room. Set your items apart equidistant between each other.
Step two: Light your candle and meditate (with your eyes closed) for some time. While meditating, imagine possessing each of the elements: fire, water, earth, air, and darkness.
Step three: With your eyes closed, turn around and chant:

God's and goddesses
Possessing the elements
Tell me, oh my
Which is mine

Step three: Turn around to face the four objects. With your eyes still closed (shut eyes is optional), hold out your hand and focus on any pull you feel. If you feel the urge to touch any of the objects, that's your element. If you feel a pull from the darkness, your element is darkness.