The key is being able to talk about those issues (finance, health, children, etc), and resolve them, without having to get into a fight. Fighting doesn't help,

The key is being able to talk about those issues (finance, health, children, etc), and resolve them, without having to get into a fight. Fighting doesn't help, it only aggravates the situation and deteriorates relationships over time. Try to avoid it whenever possible. The techniques on my previous comment are just one way for doing that, there are others as well.