what does it mean to seek the Lord?

The heavens are telling the glory of God. So we can seek him through that. He reveals himself in his word. So we can seek him through that. He shows himself to us in the evidences of grace in other people. So we can seek him through that. The seeking is the conscious effort to get through the natural means to God himself—to constantly set our minds toward God in all our experiences, to direct our minds and hearts toward him through the means of his revelation. This is what seeking God means.

John Piper

{this is just part of an article he wrote. go here to read the whole thing!}