Never seek the power of God by abandoning your self-control, physically or mentally, because His hand is demonstrated through the work of the Spirit, which is demonstrated by your self-control….As far as your mind is concerned, Paul explains that it is our responsibility to bring “every thought into captivity to the obedience of Christ” (2 Cor. 10:5). That doesn’t mean emptying your thoughts or surrendering control over what you think God. Instead, you are to exercise self-control over every thought you permit your mind to think…The truth is, in order for the hand of God to work through you, you must exercise control over your body and you mind with the strength He provides. You are an intelligent instrument in God’s hand. He has purposefully endowed you with a personality, a mind, and a will in order that He might use them for His work.
(from Beyond Jabez)