1. Be a role model: Children are more likely to adopt healthy eating habits when they see their parents and caregivers modeling healthy habits. Make sure to eat a balanced and nutritious diet yourself, and involve your family in meal planning and preparation.
2. Offer a variety of healthy foods: Offer a variety of healthy foods, such as fruits, vegetables, whole grains, lean proteins, and healthy fats, at meal times. Encourage your family to try new foods and flavors, and make healthy foods easily accessible and readily available.
3. Limit processed and junk foods: Limit the consumption of processed and junk foods, such as sugary drinks, fast food, and snacks high in fat, sugar, and salt. Instead, opt for nutrient-dense whole foods as much as possible.
4. Eat meals together: Eating meals together as a family promotes healthy eating habits and can help establish a positive relationship with food. Make meal times enjoyable by having conversations, avoiding distractions (such as screens), and creating a relaxed atmosphere.
5. Teach mindful eating: Encourage your family to eat mindfully, by paying attention to hunger and fullness cues, savoring the flavors and textures of food, and avoiding distractions during meals.
6. Involve children in meal planning and preparation: Involve your children in meal planning and preparation to help them learn about healthy foods and develop life-long healthy habits. Let them choose healthy snacks and meals, and encourage them to help with cooking and preparing meals.

Remember that healthy eating habits take time to establish, and it's important to be patient and consistent. By making small changes over time and involving your family in the process, you can help instill healthy eating habits that will last a lifetime.

It's also important to note that forming a new habit is not simply a matter of repeating a behavior for a certain amount of time. To truly establish a new habit, it's important to understand the underlying motivations and triggers for the behavior, and to make intentional choices that support the desired habit.

In the context of healthy eating habits, for example, it may take longer than 21 days to establish a consistent habit of choosing nutrient-dense whole foods over processed and junk foods. However, by focusing on the benefits of healthy eating, setting achievable goals, and consistently making healthy choices, it is possible to form new habits that support long-term health and well-being.