In your head

Jamie Clark writes of preparing to climb Mt. Everest: "When you get yourself in shape for a climb, you spend several hours a day working on an inclined treadmill with a heavy pack on your back. You look goofy, you smell, it's an ugly scene, that's always true. The road to success is not pretty".
A little observation of mine lately is that today there seems to be greater emphasis on the glamour of achievement rather than the gritiness of it.
Anybody who has achieved anything will tell you the true stories of grit and stamina that it took to make that goal or dream happen.
Peter wrote in his first epistle in 1:13-15 "Prepare your minds for action; be self controlled; set your hope fully on the grace to be given you when Jesus Christ is revealed. As obedient children, do not conform to the evil desires you had when you lived in ignorance. But just as He who called you is holy, so be you holy in all you do".
It's good to understand this, to prepare our minds for action. It would appear by Peter's writing that we need it right in our heads before we can ever put in into practice.