When it comes to being polite to someone you don't like, it can indeed be challenging. However, it is important to remember that being polite is not about expressing personal feelings but rather about showing respect and maintaining a positive social interaction. Here are a few tips to help you navigate such situations:

1. Stay calm and composed: Take a deep breath and try to control your emotions. Remind yourself that being polite is about your own character and not about the other person.

2. Focus on common ground: Look for shared interests or topics that you can discuss without getting into personal disagreements. This can help create a more pleasant atmosphere.

3. Use neutral language: Be mindful of your words and tone. Avoid sarcasm, passive-aggressive comments, or anything that may provoke a negative response.

4. Practice active listening: Show genuine interest in what the other person is saying. Maintain eye contact, nod, and ask follow-up questions. This can help create a positive interaction and make the other person feel valued.

5. Set boundaries: If the person's behavior becomes disrespectful or offensive, it is important to assertively communicate your boundaries. Calmly express your discomfort and request that they treat you with respect.

Remember, being polite does not mean you have to be friends with everyone or agree with their opinions. It is about maintaining civility and respect in social interactions.