Lots of couples make the assumption that everything has to be the same for both of them- that you have to have the same set of rules for both partners. Not true. You can operate under different rules for important areas. The happiest relationships, the most successful, the strongest, are where both parties see the need for flexibility in their rules and adjust their relationship accordingly.
I expect you to want an example? Of course, you do. Let's suppose one of you is financially tidy and the other fanatically messy (whatever that is). Normally you would have one going on at the other all the time about how messy/tidy the other is. There would be rows and problems. That's because you are both trying to work to the same rule.
It's deeper than having different incomes. What about what the other is willing to give in order to make the relationship work. Sometimes sacrifice is necessary as well. Both parties must be willing to compromise. This is what makes a relationship successful or fail. Both parties in the relationship are responsible for the end result.
The fruit of all good things is love. When there is love, there is a foundation on which the strongest of relationships can be built. Think of love as the special fruit from the most sacred of all trees. Sprinkle the juice of this fruit throughout your relationship and now you have something substantial that will grow like the tallest tree in the forests. With love, all things are possible.
The most valuable love you can bring into a relationship is the love you have for yourself. Self-love is a tasty ingredient. Bring that with you and accept your value and self-worth. It's something that no one will ever be able to take away from you.