What Are some relaxation techniques for anxiety?

I was having some problems, and The symptoms included Stomach pains, feeling of choking, and just dizziness, headaches, and loss of appetite, my fingers would freeze up and my whole body was tingling like i was recovering from a numbing shot. My dad took me to the emergency room. We found out i was having anxiety Attacks, and I was wondering what all you people with Anxiety do to relieve your panics or stomach aches or whatever. Thank You for letting me know because this is a really scary time for me. Peace!