To pray is not to use special language; it is the sound of a cry or a laugh rising from ordinary days. Formal or official words can often be lifeless. To pray we need to return like children to an elemental language of soul, to something close to song, to chant, to playground singing.
Gratefulness is the key to a happy life that we hold in our hands, because if we are not grateful, then no matter how much we have we will not be happy—because we will always want to have something else or something more.