1. Mystery of Capitol by De Soto fundamental changed how I view the world.

2. Book of Job changed how I viewed tough times in life

3. Knowing God by J I Packer also changed my who life from the ground up

4. Lord of the Rings Trilogy changed my taste in story telling when I was young.

5. Mere Christianity by c s Lewis had a huge impact on myself at the time I read it.

first 5 that came to mind!