And He who searches our hearts knows the mind of the Spirit, because the Spirit intercedes for the saints according to the will of God. — Romans 8:27

When you don't know how to pray, the Spirit intercedes for you according to God's will. That's a comfort you can't exhaust. You don't need to find the perfect words; the Spirit translates your groans into petitions that the Father always hears. This is why we're told to pray without ceasing — not because you'll get it right, but because the Spirit prays through you.