In a conflict situation, it helps to ask yourself: What do I want and what can I contribute to a constructive solution? It is up to you to decide whether you want to stick to your guns - or be willing to compromise, albeit without completely giving up on your position.
Starting a conflict conversation by levelling accusations at the other individual is never a good start. Remain objective, while still clearly addressing your needs, wishes and feelings – via first-person messages ("I was annoyed").
In the self-explanation phase, everyone must have the opportunity to openly present their point of view and enter into dialogue. Here, fairness is required: if someone opens up during the conversation, avoid phrases such as "That's exactly your problem. You see it wrong from the bottom up."
Make an effort to understand your counterpart. Ultimately, an impartial solution that costs everyone roughly the same while leaving everyone better off is the most desired outcome.
In the final phase, bring the solution across the finish line. Stay focused, repeat the compromises you jointly developed, and get explicit agreement on each one again.
Express your gratitude for the willingness to compromise and constructive input - and perform a small ritual as signal for resolving the family conflict. From a binding handshake to a dinner invitation, it's all good: conflict resolution is something to celebrate.