God specializes in things thought impossible - as a matter of fact, that is all He does.
He does not do the possible, and that is why we are so often limited in prayer.
Learn to pray in such a way that God is not limited, but you are still an effective prayer. This comes by request, and through pressing the Lord for a creative prayer life.
If you pray only for the things you can think of, you have no relationship to His creativity and you will not be able to recognize Him.
Believers must develop wisdom to know when they may pray for specifics and when they should not.
There is a famous story about Watchman Nee, who was asked to pray at a public gathering at the time when Japan had just declared war on China.
The others before him had all asked God to stop the war and spare China from the ravages it was about to go through. But he could not.
Some were angry and some were only disappointed when he said "Lord, we see in your Word that there will be wars. We know you have always used battles to take the land. We know you are sovereign. We ask you at this time to take the things that are happening and use them to bring China to Christ".
God used that particular time to establish, deepen and spread the Chinese Church.
Without God's Word used by the Holy Spirit in prayer, we are weakened and withered and ineffective.
God grant us the thirst for abandon so that we may be able to stand before Him someday and know that the ground under our feet was an altar of prayer.