Sometimes when you have no words of your own, it helps to pray the prayers of others (or better yet, to pray Scripture). Here’s one that spoke to my very inner being last night as prayed by the Puritans back in the day:

“O GOD THE HOLY SPIRIT,

Thou who dost proceed from the Father
      and the Son,
      have mercy on me.
When thou didst first hover over chaos,
    order came to birth,
  beauty robed the world, fruitfulness sprang forth.
Move, I pray thee, upon my disordered heart;
Take away the infirmities of unruly desires
    and hateful lusts;
Lift the mists and darkness of unbelief;
Brighten my soul with the pure light of truth;
Make it fragrant as the garden of paradise,
  rich with every goodly fruit,
  beautiful with heavenly grace,
  radiant with rays of divine light.
Fulfil in me the glory of thy divine offices;
Be my comforter, light, guide, sanctifier;
Take of the things of Christ and show them
  to my soul;
Through thee may I daily learn more of his love,
  grace, compassion, faithfulness, beauty;
Lead me to the cross and show me his wounds,
  the hateful nature of evil, the power of Satan;
May I there see my sins as
  the nails that transfixed him,
  the cords that bound him,
  the thorns that tore him,
  the sword that pierced him.
Help me to find in his death the reality
  and immensity of his love.
Open for me the wondrous volumes of truth
  in his, ‘It is finished’.
Increase my faith in the clear knowledge of
  atonement achieved, expiation completed,
  satisfaction made, guilt done away,
  my debt paid, my sins forgiven,
  my person redeemed, my soul saved,
  hell vanquished, heaven opened,
    eternity made mine.
O Holy Spirit, deepen in me these saving lessons.
Write them upon my heart, that my walk be
  sin-loathing, sin-fleeing, Christ-loving;
And suffer no devil’s device to beguile
  or deceive me.”