A good article from Tim Challies with a lengthy Jerry Bridge's quote. Here is the upshot:
My observation is that most of us who are believers practice what I call a “cruise-control” approach to obedience. Many cars today have a convenient feature called cruise control. When you are driving on the highway you can accelerate to your desired speed, push the cruise-control button, and take your foot from the accelerator pedal. Some mechanism attached to the engine will then maintain your desired speed, and you can ease back and relax a little. You don’t have to watch your speedometer to make sure you’re not going to get a ticket for speeding, and you no longer have to experience the fatigue that comes with constant foot pressure on the accelerator. It’s very convenient and relatively relaxing. It’s a great feature on cars.
However, we tend to obey God in the same way...Read the rest here.