We know that by small and simple things God performs miracles. These small and simple things are often us. By using the free will that God has given us, we can be instruments in His hands to carry out His plans for us. This, of course, requires action. It means we need to get ourselves out there and make something happen. A prayer said without a willingness to help that prayer be answered is a prayer said in vain. God will not simply wave a magic wand and make the world a better place. He expects us to do our part. We are His tools, and He has given us the gift of agency for a reason.
In the Book of Mormon, the prophet Alma taught,
Yea, and when you do not cry unto the Lord, let your hearts be full, drawn out in prayer unto him continually for your welfare, and also for the welfare of those who are around you.
And now behold, my beloved brethren, I say unto you, do not suppose that this is all; for after ye have done all these things, if ye turn away the needy, and the naked, and visit not the sick and afflicted, and impart of your substance, if ye have, to those who stand in need—I say unto you, if ye do not any of these things, behold, your prayer is vain, and availeth you nothing, and ye are as hypocrites who do deny the faith. (Alma 34:27-28)
If we have the means to assist others, we need to do so. If we don’t, we are nothing more than hypocrites. Jesus Christ was all about serving others. Nothing He did was for Himself. He rendered all his energy to Heavenly Father’s will, and undoubtedly was and forever will be the greatest instrument in the hands of God. If we profess to be followers of the Savior, we must do as He did.
The surest way for a prayer to come true is to do our part to make it happen. Our Father in Heaven will do the rest. We are the instruments He uses to make miracles happen.