This book discusses various mental problems and patterns that many of us face. These problems include overthinking, procrastination, self-sabotage, and more. The book emphasizes the importance of recognizing and overcoming these patterns to lead a happier life. It also talks about missed opportunities and time wasted on unimportant things. The author [Ali Ahmad] encourages readers to make the most of their time and not let regrets hold them back. Overall, "Hell Within" aims to help readers become aware of their inner struggles and find ways to overcome them, leading to personal growth and a more fulfilling life.