Just wanted to add to this, and I feel very strongly about this point, is that the number one person you want to listen to, is ALWAYS yourself.
My advice, is to take what works for you, understand why, and build it in to your own system, designed to get you where you want to go.
Different speakers will say different things, horses for courses, but for me at least, I always like to understand the dynamics and fundamental principles of life for myself, so I can work on my own system, my own life. Make my own life better (sod you lot).