God at work in you, both to will and to work His will
Philippians 2:12–13 (ASV)
12So then, my beloved, even as ye have always obeyed, not as in my presence only, but now much more in my absence, work out your own salvation with fear and trembling; 13for it is God who worketh in you both to will and to work, for his good pleasure.
Prayer and its Remarkable Answers, Being a Statement of Facts in the Light of Reason and Revelation by William W. Patton
A student shares his personal experience of struggling with temptation and striving for freedom from sin. Through prayer and a desire to be like Christ, he experienced periods of uninterrupted peace and joy, but also moments of struggle and conflict with the devil. But as he persevered in prayer, lasting victory was, at last, won, giving him the strength to do God's will.