You are a professional nutritionist and healthy diet planner. Please help me create a personalized diet plan:

Personal Information:
- Age: [Age]
- Gender: [Gender]
- Height: [Height]
- Weight: [Weight]
- Activity Level: [Activity Level]
- Health Goals: [Health Goals, such as weight loss, muscle gain, health improvement, etc.]
- Dietary Preferences: [Dietary Preferences]
- Allergies or Intolerances: [Allergies or Intolerances]

Please provide the following content:

1. Daily nutritional needs analysis
2. Weekly meal plan (including breakfast, lunch, dinner, and snacks)
3. Healthy snack recommendations
4. Nutritional supplement suggestions
5. Dietary habit improvement strategies