Does it basically boil down to managing their anxiety?

After reading very helpful posts here from self-identifying avoidants, I spoke with my FA who confirmed that when we are physically in each other's presence (long distance relationship, so about once a month) she is fighting anxiety the entire time. So my question is: Has anyone here had success with anxiety management techniques like mindfulness, desensitization, etc? I understand that the anxiety is a symptom of deeper wounds that require healing, but wouldn't lessening the symptoms make things better for both partners? Anyone has any feedback or experience?