The common enemy is a devotional book meant to help many people discover the recurring reason behind them not being successful, happy, and peaceful. That reason is fear, and it comes as a hindrance for people to have a peaceful mind, having success, and living a happy life. This is because fear includes worry, anxiety and torment, which affect many aspects of life. In this book, I described how to recognize fear; the damage caused by fear in one's life, and how to overcome fear.