Its completely up to the gear ratios on your bike.

http://www.panix.com/~jbarrm/cycal/cycal.30f.html

This site allows you to calculate your gear inches. Basically, the higher the gear inches, the more torque needed to turn the pedal. If you calculate based on a 700x23c wheel you can see that the order of easiest gear to hardest gear involves a lot of shifting between your cogs and chainrings. So therefore just pedal in gears that are most comfortable, you don't need to approach like a car.