One of the things Lewis shared was that leading a "double life" can rob us of our adventure. He said this is something that is so subtle and it can easily creep up on us, especially if we are Christians.
The reason this is so for Christians is that oftentimes our three faces aren't very close to one another.
He said that each of us has three faces: the public face, the private face and the personal face. The public face is what everyone knows when they see us. The private face is what a few close to us know. The personal face is who we are at our core.
As Christians, oftentimes we put on this public face that is expected of us while inside we are really a mess--our personal face is totally different...our walk isn't matching our talk.
The closer these three faces are to each other, the more healthy we are.
I just looked up the definition of "integrity" and one of the definitions I found was this: "The quality or condition of being whole or undivided; completeness." Being whole or undivided...interesting. In other words, not having a division between our three faces = integrity.
If any of you lacks wisdom, he should ask God, who gives generously to all without finding fault, and it will be given to him. But when he asks, he must believe and not doubt, because he who doubts is like a wave of the sea, blown and tossed by the wind. That man should not think he will receive anything from the Lord; he is a double-minded man, unstable in all he does.