The disciples had had much success in casting out demons, but there came a time when they failed at their objective.  Jesus tells the disciples that this particular type of demon was different.  That to cast this demon out would require prayer and fasting.  I'm sure it was a humbling experience for the disciples and a learning one.

There is an old adage that says, "Experience is the best teacher."  This is true, but only if you take time to learn from the experience.  We like the disciples face times of failures.  When these times come we should take the opportunity to learn from them; to make the most of them!  Experience is a hard teacher, for the test is given first and then the lesson.  Take time to learn from your experiences; don't make the same mistakes twice.  Everyone has failures and everyone makes mistakes, but not everyone learns from them.  Take the time to learn from yours!  Turn your mistakes and failures around, making them learning experiences!

"And we know that all things work together for good to those who love God, to those who are the called according to His purpose." Romans 8:28