Philippians 4:7 says, "and the peace of God, which passeth all understanding, shall keep your hearts and minds through Christ Jesus." You must guard your mind. Failure to do so will keep you on first base! How would you like to play in a ball game and never get past first base? No one ever hits you in. You just stand on first base all the time. Three outs. You go back to the dugout. You get back up and knock someone in, but you go to first base. You'll never touch Homeplate because you refuse to deal with certain things in your life that you think are hidden and no one knows about.
God knows and He is waiting on you to deal with them. When you deal with them, that's what we call building your character. No one sees that part of you; all they see is your charisma – how good you are on the outside. But I want to tell you, your charisma is nothing if you don't have any character. You've got to have character. God is working in people to develop some character on the inside of them. If you plant the Word of God on the inside of you, you will get the victory over what's in your mind.