It would be difficult to find a better summary of what Desiring God is all about than from this quote taken from the writings of Puritan Thomas Watson:

We glorify God by working out our own salvation. God has twisted together, his glory and our good. We glorify him by promoting our own salvation. It is a glory to God to have multitudes of converts; his design of free grace takes effect, and God has the glory of his mercy; so that, while we are endeavoring our salvation, we are honoring God.

What an encouragement is this to the service of God, to think, "while I am hearing and praying, I am glorifying God; while I am furthering my own glory in heaven, I am increasing God's glory!"

Would it not be an encouragement to a subject, to hear his prince say to him, "You will honor and please me very much, if you will go to yonder mine of gold, and dig as much gold for yourself as you can carry away"? So, for God to say, "Go to the ordinances, get as much grace as you can, dig out as much salvation as you can; and the more happiness you have, the more I shall count myself glorified!"

Thomas Watson, A Body of Divinity (Banner of Truth: 1890, 2000), 13–14.