When there is any disagreement, acknowledge that your partner is right and ask to speak about it further. This is paradoxical but disarming.

When there is a need for change, acknowledge that you need to change. Focus on how you can change. Figure out what you need to do better. Do not try to blame or change her.

Common interests can be overemphasized. There can be charm and love in diversity as well as in commonness. It all depends.

So for example let's say that one is a socializer and the other likes to stay home. Maybe it won't work out. But maybe it will! Maybe the socializer brings light and energy to the homebody, and the homebody brings depth and peace to the socializer. Maybe the two can meet in a place where both can find growth, joy, love.