Of all duties, prayer certainly is the sweetest and most easy. A prayer sent from the heart's deep core is a sally of the soul into the unfound infinite. Prayer may be inaudible speech, bit it is necessarily a candid dialogue with that higher entity, it is an attempt to represent yourself, in order to go to the roots of action.
I love to give thanks in solitude. For me, it is wordless, and mainly takes the form of thanksgiving. Thanksgiving gives my prayer wings and it goes where it must go. My prayer knows much more about it than I do. I say my prayer without giving the Almighty reasons why he should grant this, or that; he knows best what is good for us.
Prayer is not necessarily sitting before an idol, or telling beads, or reciting shlokas... To pray is to pay attention to something or someone other than myself. Whenever I concentrate my attention something so that I completely forget my own ego and desires, I am praying.
Henry David Thoreau