How does one overcome claustrophobia?

Phobias: Cognitive behavior therapy with a trained counselor/therapist can help. Also behavior modification using exposure-response prevention-desensitization technique is helpful. Meditation & imagery work is also of help. Discuss all such options with the therapist.

Agree with Dr. Ali: For Phobias consider Cognitive Behavioral Therapy, Behavior Therapy, Psychotherapy, Exposure therapy (imaginal exposure therapy, systematic desensitization, flooding, prolonged exposure therapy, in vivo exposure therapy) or hypnosis as possible options. Psychotropic medications are some times indicated as well.