God is awesome, God is overwhelming, God made us for so much more than we often allow in our lives... because it's so much easier to lock ourselves up and hide, than it is to take a risk now and then or for that matter to clean out our ears.

"After 25 years of priesthood, I found myself praying poorly, living somewhat isolated from other people, and very much preoccupied with burning issues. Everyone was saying that I was doing really well, but something inside was telling me that my success was putting my own soul in danger. I began to ask myself whether my lack of contemplative prayer, my loneliness, and my constantly changing involvement in what seemed most urgent were signs that the Spirit was gradually being suppressed. It was very hard for me to see clearly, and though I never spoke about hell or only jokingly so, I woke up one day with the realization that I was living in a very dark place and that the term "burnout" was a convenient psychological translation for a spiritual death."
In the Name of Jesus: Reflections on Christian Leadership
Henri Nouwen

We often get so caught up in doing when really, doing is not what God made us for, he made us to listen, to grow in fellowship, to share with others. So while the good things we do are just that--good; it doesn't mean we were supposed to be doing so much. And that because God knows us, he has set parameters for us, he knows we need renewal, he knows we need rest and when we get to a point of burnout it's time to reassess where we are because most likely we are out of God's will and not doing what he has asked of us. I don't believe he ever wants us to reach that point, he allows it, most certainly, but he doesn't ask that of us--how effective can we truly be if we are burnt out?