This is from a dear, wise, older friend from church (and it's not verbatim):

If you went to a store wanting to buy a 1000 piece puzzle, would you buy it if you couldn't see the picture? If you couldn't see what the finished product would look like, would you still buy the puzzle? Probably not. Isn't that what our lives are like? Don't we feel like pieces are missing and sometimes we cannot see how the pieces we do have will actually fit? Who is the One who has all the pieces? God. He gives us a few pieces to work with, and holds on to the remainder, giving them to us according to His timing and will. He knows the finished product; He knows how our individual stories will play out. It's up to us to work with the pieces we've got, and to trust that He will give us more pieces when the time is right and the piece fits.

I desperately wish I could explain this the way my much wiser friend did, but I think you get the jist.

I am an unfinished puzzle, and I am so grateful that the Creator of all the universe, holds my pieces in His hand. I know He has just the right place for them, and He knows so much better than I do when and where they'll come together.