First, you should realize that you are not alone. Many people, including those with advanced math skills, experience math anxiety from time to time. One of the best strategies you can use is to work in a group with other students who are struggling with the same material. As you help each other, you will find support and be able to support others. This can greatly increase your confidence. Ask the tutor on duty about helping you join a study group on campus.
Also, try not to be too hard on yourself. A bad grade, or a series of them, can make you feel like giving up. It is very important for you to get help and support from others when you are feeling this way. You can succeed!
Last but not least, be realistic about the amount of time and effort that is required to succeed in math. For example, spending two hours on math six days per week will be much more effective than cramming twelve hours all at once. If you feel yourself growing frustrated, take a break! When you come back, you may see things a little more clearly. If not, talk to your tutor about other strategies you can use.
Helpful Links» Student Support Services
Offers workshops related to math anxiety and test anxiety. Friday workshops are open to all WSU students.» WSU Counseling and Psychological Services
Offers professional counseling at no charge to WSU students. Take the above link to learn more about available services, including The Relaxation Group.» Services for Students with Disabilities
If you have a learning disability or other documentable disability, you may want to learn about assistance
Also, consider taking a "fun" class to help you relieve stress, perhaps in Physical Education, Art, Music... something that you enjoy. It takes a lot of hard work to succeed in college and you need to reward yourself for your efforts.