We have some great books on dealing with anxiety in our Book List. I have found that simple breathing techniques can help a lot and there are a lot more ideas in these books:
Amen, Daniel Change Your Brain, Change Your Life
Bassett, Lucinda From Panic to Power
Burns, David MD When Panic Attacks
Chodron, Pema The Places That Scare You
Doidge, Norman MD The Brain That Changes Itself
Dyer, Wayne The Power of Intention and Change Your Thoughts, Change Your Life
Jeffers, Susan Feel the Fear and Do it Anyway
Orsilla, Ken Mindful way Through Anxiety