Too often we are tempted to do things on our own. We think that we know best and so we strive to get our way. However, God will not share his glory with anyone else and so God waits for us to come to the end of our ourselves before he steps in.
"Faith does not operate in the realm of the possible. There is no glory for
God in that which is humanly possible. Faith begins where man's power ends." - George Muller.