There are things to forget; there are things that don't really matter; and there are things that we should never, ever forget.
God, who gave us the ability to remember, does not leave us in a fog. He tells us to use our mind, to control what we think about, and know what we should ignore.
Isaiah 51:12-13 says that we have no business paying attention to man while forgetting our Maker.
Is this not the issue that so often bends us out of shape? Do not others--in a bad way--have too much effect on our thinking? And is it not the easiest thing in the world to forget that God is the ultimate Comforter because He made us, knows what we need and don't need, and has all power to provide?
May we learn to forget--
Or not.

"I, even I, am he that comforteth you: who art thou, that thou shouldest be afraid of a man that shall die . . . And forgettest the LORD thy maker" 

Does it make any difference?
Some will stew over how it can be possible for an omniscient God and a human prayer to mesh.
And in stewing, they don't pray.
Others skip the anguish through pure and simple faith. They realize that we will never understand the mysteries of eternity from this earthly platform in time. So they just believe, and pray.
In Isaiah 37:21, God delivered a pretty straightforward message to Hezekiah: BECAUSE YOU PRAYED... I WILL SPARE YOU.
Now what would have happened had Hezekiah not prayed? Well, we can speculate, or wish for a fuller explanation, or beg for more light on the subject. But we cannot claim ignorance of God's will.
He wants us to pray.
He wants us to pray more than He wants us to understand how prayer works.
He wants us to pray so He can show us His interest, His love, and His glory.

​"Lord, teach us to pray."