Scientists do not create laws of nature. Instead, they open them. That means, laws of nature existed, exist and will exist independently of us and our knowledge about them.
Similar should be applicable to laws of human nature. God created a human. We didn't create ourselves. We can just reproduce our genes by making children. However without artificial (and often non-successful) intrusion into DNA we cannot change our genome in the short term.
Laws of human nature affect all the aspects of our life - success, relationship, happiness etc. What are they?