Critical thinking is at once simple and complex. Though there are many layers to critical thinking, and you can always deepen your understanding of it, there are some basic ideas in critical thinking that, if taken seriously, can almost immediately improve the quality of your life. This book offers 25 such ideas. You can focus on one idea per day or one idea per week. And each idea is immediately applicable to your life. This book is for anyone interested in improving the quality of their lives by improving the quality of their thinking.