While trying to meditate I was concentrating on my breath. In and out. In and out. Then I began to try to experience that every breath was a gift from God, every breath an expression of love, every breath the holy spirit going in and of my lungs (I think I got this practice from Anthony de Mello).
The image that came to mind from this was to think of every breath as coming from a divine umbilical cord. I began to think of myself being supported by the body of God. I thought of every sound I could hear (distant traffic, birdsong, the hum of my fridge) as being the heartbeat of God (or maybe the rumbling of God's stomach).
The world around me is the body of God. The universe around me is God. I am supported and fed by the very body of God in every moment of existence.
I return to this image (though it's a feeling more than an image) of the womb of God in my prayer. Each of us is loved and intimately supported by God in this way. Prayer does not mean striving to try to "achieve" anything. Prayer is simply rest - an opportunity to rest in the love of God, in the womb of God.
(I don't know the name of the artist who created the above image. I'd be happy to credit if I knew)