I'm a psychologist who uses EMDR therapy as my primary psychotherapy treatment and I've also personally had EMDR therapy for anxiety, panic, grief, and “small t” trauma. As a client, EMDR worked extremely well and also really fast. As an EMDR therapist, and in my role as a facilitator who trains other therapists in EMDR therapy (certified by the EMDR International Association and trained by the EMDR Institute, both of which I strongly recommend in an EMDR therapist) I have used EMDR therapy successfully with panic disorders, PTSD, anxiety, depression, grief, body image, phobias, distressing memories, bad dreams, and many other problems. It's a very gentle method with no significant "down-side" so that in the hands of a professional EMDR therapist, there should be no freak-outs or worsening of day-to-day functioning. EMDR therapy has a ton of excellent research behind it validating its efficacy.
One of the initial phases (Phase 2) in EMDR therapy involves preparing for memory processing or desensitization (memory processing or desensitization - phases 3-6 - is often what is referred to as "EMDR" which is actually an 8-phase method of psychotherapy). In this phase resources are "front-loaded" so that you have a "floor" or "container" to help with processing the really hard stuff, as well as creating strategies if you're triggered in everyday life. In Phase 2 you learn a lot of great coping strategies and self-soothing techniques which you can use during EMDR processing or anytime you feel the need.
In phase 2 you learn how to access a “Safe or Calm Place” which you can use at ANY TIME during EMDR processing (or on your own) if it feels scary, or too emotional, too intense. One of the key assets of EMDR therapy is that YOU, the client, are in control NOW, even though you weren’t in the past, during traumatic events. You NEVER need re-live an experience or go into great detail, ever! You NEVER need to go through the entire memory. YOU can decide to keep the lights (or the alternating sounds and/or tactile pulsars, or the waving hand, or any method of bilateral stimulation that feels okay) going, or stop them, whichever helps titrate – measure and adjust the balance or “dose“ of the processing. During EMDR processing there are regular “breaks” and you can control when and how many but the therapist should be stopping the bilateral stimulation every 25-50 passes of the lights to ask you to take a deep breath and say just a bit of what you’re noticing, anything different, any changes. The breaks help keep a “foot in the present” while you’re processing the past. Again, and I can’t say this enough, YOU ARE IN CHARGE so YOU can make the process tolerable. And your therapist should be experienced in the EMDR therapy techniques that help make it the gentlest and safest way to detoxify bad life experiences and build resources.
Grounding exercises are essential. You can use some of the techniques in Dr. Shapiro's new book "Getting Past Your Past: Take Control of Your Life with Self-Help Techniques from EMDR." Dr. Shapiro is the founder/creator of EMDR but all the proceeds from the book go to two charities: the EMDR Humanitarian Assistance Program and the EMDR Research Foundation). The book is an easy read, helps you understand what's "pushing" your feelings and behavior, helps you connect the dots from past experiences to current life. Also gives lots of really helpful ways that are used during EMDR therapy to calm disturbing thoughts and feelings.
In addition to my therapy practice, I roam the web looking for EMDR therapy discussions, try to answer questions about it posted by clients/patients, and respond to the critics out there. It's not a cure-all therapy, however, it really is an extraordinary psychotherapy and its results last. In the hands of a really experienced EMDR therapist, it's the most gentle way of working through disturbing experiences.
And, BTW, The World Health Organization has published Guidelines for the management of conditions that are specifically related to stress. Trauma-focused CBT and EMDR are the only psychotherapies recommended for children, adolescents and adults with PTSD. “Like CBT with a trauma focus, EMDR therapy aims to reduce subjective distress and strengthen adaptive cognitions related to the traumatic event. Eye movement desensitization and reprocessing (EMDR): This therapy is based on the idea that negative thoughts, feelings and behaviours are the result of unprocessed memories. The treatment involves standardized procedures that include focusing simultaneously on (a) spontaneous associations of traumatic images, thoughts, emotions and bodily sensations and (b) bilateral stimulation that is most commonly in the form of repeated eye movements. Like CBT with a trauma focus, EMDR aims to reduce subjective distress and strengthen adaptive beliefs related to the traumatic event. Unlike CBT with a trauma focus, EMDR does not involve (a) detailed descriptions of the event, (b) direct challenging of beliefs, (c) extended exposure, or (d) homework.” (p.1) (Geneva, WHO, 2013)