Some thoughts about my interest in learning the methods and theories studied and practiced by Clinical Psychologists at large

I have been thinking to develop a practice in Japan, on how to cultivate and sustain a good attitude in an individual's life.
Meanwhile, I am trying to access to research papers pertaining to various educational fields, to learn how I can adopt their research methodology and at the same time how this "Cultivating and Sustaining a Good Attitude" meditation course can be a worth for research, in the interest of mental well being.

Also, I have been wondering in my course whether I can adopt some of the effective method of treatment taught in Clinical Psychology. I would love to hear ideas and comments related to treatment methodology from people who have exposure to clinical psychology.