Your children will follow your example. If you eat fruits and vegetables, they will likely eat fruits and vegetables. If you have soda for breakfast, they will likely have soda for breakfast. Children learn from the example you set.
Parents are role models for their children and have the greatest influence over their children’s lives. Children watch their parents to learn the appropriate behavior to imitate. This goes from basic manners to attitudes towards food. (FYI – Watch what you say about a food in front of your kids! Just because you may not care for broccoli, doesn’t mean they won’t learn to love it.)