The four questions are tools for self-inquiry that help examine your beliefs about reality. While the book explains them in detail, they essentially guide you to question whether your thoughts are true, how you react when you believe them, and who you would be without these thoughts.

The effectiveness varies by individual, but many readers report experiencing shifts in perspective and emotional relief from their very first session of questioning their thoughts. Consistent practice leads to deeper and more lasting transformations.

Yes, the book demonstrates through various case studies how The Work has helped people deal with profound issues including trauma, depression, and relationship problems. However, it's recommended to work with a qualified mental health professional for severe emotional concerns.