To make a healthy weekly meal plan, start by determining your calorie and nutrient needs based on your age, sex, weight, physical activity, and health goals. Then, choose a variety of nutrient-dense foods such as fruits, vegetables, whole grains, lean proteins, and healthy fats to include in your meals and snacks. Plan your meals ahead of time, make a grocery list, and shop for ingredients accordingly. Consider batch cooking, meal prepping, and using leftovers to save time and reduce food waste. Monitor your portion sizes, limit added sugars, salts, and saturated fats, and drink plenty of water throughout the day. Finally, be flexible and adaptable to change as you learn what works best for your taste buds, lifestyle, and budget.