Is it possible to cheat this system based on your reading?

[jennifer_bloom]

I've concluded based on my research of this topic that no matter how good your life is, you will never be happy all the time and no matter how bad your life is, you will never be depressed all the time. The worst times in my life had very good times and the best times in my life had bad times. Exceptions are possible for very religious or spiritual people or people with brain issues that make them depressed 24 / 7. They might change the rule but the average person falls into these boundaries. Do you agree?

[HannesK]

I would agree with that assessment.
I would add, the bad and good times have both purpose. You learn from the bad times and appreciate the good ones. If you just have good times, you are less and less thankfull, because you get used to them. If something smal bad happens, it is super big, because your viewpoint is distorted.

One way to kinda cheat the system is mindfulness. Appreciate the smal things in your life and take the bad things as learning material to grow from.