The Law of Relativity is all about the neutrality of things when seen in isolation. So, no particular person, experience, emotion or action is evaluated as good or bad until you look at it in comparison with something else.
For example, you may think you are poor, but perhaps that’s because you have three wealthy uncles. By keeping this law in mind, you remain conscious of the fact that there are always multiple perspectives on anything that happens to you. Trying to slip into these alternate perspectives can make you more grateful, and can also show you where you can make improvements in life.