I'm sorry to hear that you're facing this challenging situation. Dealing with parents who are not supportive of your choices can be difficult, especially when they exhibit narcissistic behavior and are unwilling to listen to your feelings and preferences. Here are some steps you can consider taking:
Educate Them: Try to calmly and assertively communicate your reasons for wanting to be a vegetarian. Share information about the ethical, environmental, or health reasons behind your decision. Provide them with facts and evidence that may help them understand your perspective better.
Choose Your Battles: Decide when and where to engage in discussions about your vegetarianism. It may be better to avoid confrontations during mealtime when tensions can be higher. Instead, find a calm and appropriate moment to talk about it.
Offer Alternatives: Propose to prepare or help prepare vegetarian dishes for yourself. Show them that you are willing to take responsibility for your dietary choices while still being respectful of their preferences.
Seek Support: Reach out to other family members, friends, or online communities who share similar values and experiences. Having a support network can provide understanding and encouragement during difficult times.
Be Patient and Persistent: Changing deeply ingrained beliefs can take time. Continue to stand firm in your decision and demonstrate your commitment to being a vegetarian.
Set Boundaries: Politely and respectfully establish boundaries regarding your dietary choices. Let them know that you expect your choices to be respected, just as you respect their choices.
Seek Professional Help: If your relationship with your parents becomes overly toxic or emotionally harmful, consider seeking guidance from a therapist or counselor who can help you navigate this situation and provide you with coping strategies.
Find External Support: If possible, find other adults or mentors who can advocate for your choices and help mediate discussions with your parents.
Financial Independence: If you are financially able, consider living on your own or becoming more independent so that you can make your own dietary decisions without interference.
Remember that it's okay to have different beliefs and opinions from your parents. Your dietary choices are a personal decision, and you have the right to make choices that align with your values and beliefs. However, always prioritize your safety and well-being, and if the situation becomes abusive or harmful, it might be best to seek professional help and consider finding a safe living environment.