If we are struggling in prayer it is because the wiles of the enemy are getting the upper hand, and we must look for the cause in our lack of discipline. There are some things we have not been strenuously practicing. We used to pray in the morning, do we now? We used to commune with God over the Bible, do we now? We used to be in contact with God wherever we went, are we now? Put on the whole armor of God and continuously practice, then the wiles of the devil cannot get you unaware.
Taken from the book If You Will Ask by Oswald Chambers 1874-1917