Of all the kitchen gadgets that help you eat healthy, one of my favorites is the salad spinner. I used to find them silly, but now that I have one, I use it all the time. With a little elbow grease, the whirling colander makes it easy to wash and dry lettuce in large batches.
If you've got a salad spinner, make it a part of your Sunday night ritual. Buy a head of lettuce over the weekend, then wash and dry a big batch on Sunday night. You can just keep the lettuce in the spinner and store it in the fridge. That way, you've got a bunch of prewashed lettuce for weekday lunches and dinners.