Hello:
I work helping people file disability claims so I wanted to share my experience with you on that.
In order to qualify, you need proof that you are unable to work, letters from doctors and other professionals, records of hospital admissions for mental illness. Proof that your illness prevents you from working for a year at least.
People that have been successful getting disability for mental illnesses include those with schizophrenia, bipolar, etc. I'm not saying your anxiety is not serious but it has to be so debilitating that you can not function-severe panic attacks(documented), suicidal depression requiring hospital admissions to be considered disabled.
So if you do not have the required proof you will most likely be denied.
I do know some people that have anxiety disorder that can work with the help of skills learned through a therapist and medications, and are successful.
I do not know any people that get SSDI for anxiety, but that's just my corner of the world.