Overcoming cultural barriers in friendships requires empathy, communication, and a willingness to learn and adapt. Start by acknowledging and respecting cultural differences, and be open to discussing them with your friend. Ask questions and seek clarification when you encounter cultural practices or customs that are unfamiliar to you, and be willing to share your own cultural background and experiences. Practice active listening and empathy, and try to understand your friend's perspective and motivations. Be patient and tolerant of cultural differences, and focus on building common ground and shared experiences that transcend cultural boundaries.