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Learn How You Can Live A Full & Happy Life!


Who is Shawn Mash?

Shawn W. Mash, President of Professional Dynamics, Inc. is a recognized authority on clinical hypnosis and the behavioral sciences. In addition to his private practice and group therapy programs, he provides seminars which combine behavior change roles with human relationship skill building.

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Shawn & Zelda Mash

We Can Help You Be Successful

Get What You Want Out Of Life

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What Happy Clients Are Saying


I have not smoked since the first session that I had with you at the clinic. You know that I am an auctioneer, and at the time of the session, I was an addicted smoker – four packs of cigarettes a day and a pipe! You were there for me. You gave me the mental tools to quit. I could not have done it without you.

Bernie Dworkin

After the very first session, I did not feel the desire to smoke and still have no real desire to smoke cigarettes. I tried to quit smoking before, but the desire to smoke was always present. Not so with your program.

Maria Gutierrez

Another problem I had in the past was gaining weight when I was trying to quit smoking. With your program, I don’t even think about eating until I feel hungry. I feel confident that the pounds will be coming off with ease. I believe that anyone who tries your program will stop smoking!

Claudia Hyatt

I was a slave to cigarettes. No one wants to breathe your smoke. I was an outcast on an bus, in a restaurant, or someone’s home. You can’t be free….if you are hooked on cigarettes, you must carry the monster with you every moment of the day. Thanks for helping me get rid of the monster!!

Nina L. Schauer

After having smoked for over 27 years, with only one unsuccessful attempt to stop. I have finally and permanently gone from three packs a day to none. I now have complete independence from the poison of nicotine. The feeling is exhilarating!

Joseph G. DuPuis

With the help of your books and blog articles I was able to find answers to many questions. It feels great to know what you want in life.

Jeffery C. Siegel, Ph.D.

Make The Changes You Need, So You Can Live Life To The Fullest! - Shawn Mash

Success Stories

a truly life-changing moment

Glen Holton’s story:

On Anxiety – “Two years later I called to set another appointment with Shawn. I was having serious business difficulties. When I stepped into the waiting room, his wife, Zelda, took one look at my eyes and interrupted Shawn m’ the middle of a session. Shawn saw it was an emergency, and thought the room was fiill, he hypnotized me, helped me relax and relieved my anxiety. He was so successful removing my fear and pain I didn’t want to come out of the hypnotic trance. I finally felt safe.”

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Thank You Letters

Glen Holton’s Last Word- It Works!

For fear of lung cancer about six years ago, I decided it was time to quit smoking. My wife kept telling me smoking was no good for my health. In fact cigarettes were killing me but it would be a few years before this would be diagnosed.

The Effectiveness of Shawn Mash’s Hypnotherapy

In 20 years of practice as an Occupational Therapist in Psychiatric settings, I have observed the skills of many therapists using hypnosis. I also knew Shawn’s original teacher and mentor. I feel qualified to give a professional opinion. Shawn Mash is among the best hypnotherapists in the...

Incredible, the program is simply incredible!

I was apprehensive about going “under”, but the whole process is amazingly “easy” to accomplish and has a wonderful effect on your entire system, emotionally and physically. I am convinced that the success of the program lies in the fact – feeling relaxed –...