system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: The less you focus on things out of your control, the happier you will be

For some people they worry about sports or romantic relationships. People waste a lot of energy hoping their favorite sports teams win the big title or that cute someone likes them back when it is almost always outside of their control of what happens there.

For me, it's the stock market, politics, religion and cars. Thankfully, I've learned to accept the ebbs and flows of the bear and bull days. At this rate I'm going probably going to be in a middle class job where it would be a pipe dream for me to own a Ferrari or Lamborghini so I've stopped caring about what the newest hypercar will be like because I might only drive it in a Las Vegas supercar experience once every few years when I can afford it. With politics, I as a single person have little influence on who becomes president or who controls congress yet I still find myself reading political news everyday as if I am addicted to political news.
gpt
I want to challenge "the happier you will be" part.  


All you can gain by avoiding stressors (like managing what you worry/think about) is a lessening of stress - if stress is the only thing making you unhappy, then sure, it might make you happier. If not, only focusing on what you can control might not make you any more happy, even if it reduces how much stress or worry you experience.  


Conversely, if worrying about things out of your control (whether or not the Eagles will win at football, whether or not your new television series will have a happy ending, whether or not Gordon Ramsey will Turn This Restaurant Around) helps you feel HAPPIER by introducing suspense and entertainment, following your advice might even LESSEN happiness.  


Taken to an extreme, this is even an argument against optimism, since nothing *ever* is 100% under our control alone. Even things that are able to be controlled are almost never controlled by only one person. Even thoughts can be intrusive and unintentional.  


To summarize, you conflate stress with unhappiness, and lack of stress with happiness, and it obscures your main points.