Sleep at least 7 hours a night. Eliminate all sources of light from your bedroom. Get to bed at least 8 hours before you expect to wake up, and spend the last hour before that relaxing with the lights turned down. When you sleep better, you’ll have more energy, and thus move more and burn more calories. Your body will regulate it’s appetite better. Your hormonal profile will improve, allowing you to build more muscle and burn more fat, independent of diet and exercise.
The diversity in tools and strategies that work for people is nicely illustrated by the National Weight Control Registry (NWCR), which, since 1994, has collected data on people who have lost 30 pounds or more and kept it off for at least one year. If you take a look at some of their findings, you’ll see some commonalities in various behaviors and strategies (such as increasing eating breakfast every day, watching fewer than 10 hours of TV per week, and weighing themselves regularly). But rather than looking at the NWCR’s data as a how-to guide—after all, these are the behaviors that correlate to weight loss, we can’t know if they’re the ones that caused weight loss—look at it as further evidence that there’s no one right way to live to lose weight and keep it off, and that finding the thing that will work for you is a personal journey, specific to you.
Here's something else most people probably don't know: Fidgeting is good for you. It's considered a nonexercise physical activity, and it's an important way to burn energy. You get more health benefits if, in addition to exercising, you are a more fidgety, more active person the rest of the day. This means gesturing while you're talking, tapping your foot, just moving around.