The central premise of the book is that our thoughts and emotions have the power to influence our circumstances and manifest our desires. According to Goddard, it is not merely thinking about what we want that brings it into our lives, but truly feeling and experiencing the emotions associated with having our desires fulfilled. He argues that when we are able to cultivate the feeling of already having what we desire, we align ourselves with the vibrational frequency of our desires, and they are more likely to manifest in our lives.

The central promise of "The Game of Life and How to Play It" is that individuals have the power to shape their destinies through their thoughts and beliefs. The book presents several key principles and concepts, including:

• The Power of Affirmations
• The Law of Attraction
• Visualization
• Divine Guidance

"As a Man Thinketh" teaches that individuals have the power to shape their destinies by cultivating a positive, purposeful, and responsible mindset. It promises that by controlling and directing one's thoughts, a person can create a life of success, happiness, and fulfillment.

The book is relatively short but packed with timeless wisdom and principles for personal transformation. It has had a profound influence on the self-help and personal development literature, and its core message is still widely celebrated and relevant today.

The central promise of "The Power of Your Subconscious Mind" includes the following key principles:

• The Subconscious Mind's Influence
• Belief and Affirmation
• Visualization and Mental Imagery
• Overcoming Limiting Beliefs
• Mind-Body Connection

The book is often described as a practical guide to using the power of the subconscious mind to achieve personal and professional success, improve relationships, and enhance overall well-being. It promises that by changing one's thought patterns and beliefs, a person can transform their life and create the reality they desire.

The central promise of "The Hindu-Yogi Science of Breath" includes the following key concepts:

• Pranayama
• Energy and Vitality
• Balance and Harmony
• Spiritual Development
• Practical Techniques

The book is essentially a guide to understanding and applying the principles of Pranayama and Hatha Yoga in everyday life. It offers a combination of traditional wisdom and practical advice for achieving better health, mental clarity, and spiritual growth through the practice of controlled breathing.

The key promises and principles found in "Think and Grow Rich" include:

• The Power of the Mind
• Definite Purpose
• Faith
• Autosuggestion
• Mastermind Principle
• Persistence
• Specialized Knowledge
• The Subconscious Mind

"Think and Grow Rich" has been influential in the field of personal development, success, and wealth creation. It has inspired countless individuals to adopt a success-oriented mindset and take concrete steps to achieve their goals. While the book focuses on financial success, its principles can be applied to various areas of life, making it a classic in the self-help literature. It promises that with the right mindset and principles, anyone can achieve their goals and grow rich in every sense of the word.