The tempted one needs to understand the true force of the will. This is the governing power in the nature of man—the power of decision, of choice. Everything depends on the right action of the will. Desires for goodness and purity are right, so far as they go; but if we stop here, they avail nothing. Many will go down to ruin while hoping and desiring to overcome their evil propensities. They do not yield the will to God. They do not choose to serve Him.
God has given us the power of choice; it is ours to exercise. We cannot change our hearts, we cannot control our thoughts, our impulses, our affections. We cannot make ourselves pure, fit for God's service. But we can choose to serve God, we can give Him our will; then He will work in us to will and to do according to His good pleasure. Thus our whole nature will be brought under the control of Christ.
Through the right exercise of the will, an entire change may be made in the life. By yielding up the will to Christ, we ally ourselves with divine power. We receive strength from above to hold us steadfast. A pure and noble life, a life of victory over appetite and lust, is possible to everyone who will unite his weak, wavering human will to the omnipotent, unwavering will of God.
MH 176 - MH 176.4