Amongst the list of good economic decisions to make personally, getting a good partner is one of them although it is often exempted from the list and not mentioned.
I came across something that should have been funny and a joke, but I could not ignore it. Something about a woman bragging about making her husband a millionaire, and anyone hearing it would have been impressed at how virtuous and smart she is, but when asked what the man was before she met him, she said a "multi millionaire". Apparently that is the joke, but a serious look at that will tell you that the person you choose to spend the rest of your life with as a man and a woman will affect your finances.
A good man/woman will increase and help you multiply the resources you have, a bad man/woman will diminish your resources. This is why choosing should be done carefully.