Anxiety isn't like seizures. Its a rational disease. Your disorder is always validated by your mind. It's not that you're scared to go to work because of what could happen if you do, you're not feeling well. It's not that you don't want to go to the party because you might not be able to control your PTSD, you just hate dealing with that guy. My Ex had convinced herself that there was an environmental problem at her office so she wouldn't have to deal with clients before her partner made her go back on her meds. If you're going to go without medication it's essential that you're monitored, think of your therapist as your lifeline. Also joining a group is a good idea, more support, more people backing you up.