Every little decision you make can lead you in the right (or wrong) direction. Weight is lost a pound at a time...and each pound is lost an ounce at a time. Little changes can add up over time to weight loss. If he's super busy, have him bring a packed lunch to work/school instead of fast food or another unhealthy option. Schedule in 15 minutes of exercise per day, and increase it when you find you have more time for more than 15 minutes.