I highly agree with this concept. I call it self talk. We create what we communicate to ouselves on an ongoing level. There is even a Science of this internal language called NLP or neuro linguistic programming. This inner dialogue is very, very important. Listen to yourself and see what language you use on an ongoing basis. It may be a clue to many things. This has ramifications spiritually, emotionally, and physically, so choose your words/thoughts wisely.