This is by far one of the best books on prayer I have ever read. I had been on a prayer journey and I thought my prayers were something until I read this book. Very few chapters in - I rated my prayers closer to negative infinity (I am serious). If you think you know a lot or all there is to prayer - I challenge you to read this. I would not trade this 31 day experience for anything. I am so glad for coming across Andrew Murray and especially this classic from over a century ago. What a gift and blessing! I’m so grateful for all the teachers God has used so mightily and their works that are preserved in books such as this. Change your life - read this book no matter how “mature” in Christ you think you are. What a good God we serve! He will ensure we get just what we need regardless!