Agree. Another examples are East Asian countries such as China and Japan. Despite being developed countries their citizens are relatively unhappy and lives a stressful life. Why? because they care too much about achievement and what others think about them.Whenever I've watched videos of poor places in the Philippines it looks like people are genuinely content. Kids playing, men playing cards and chatting with a beer, always ready to meet a new person that comes along (and shoot them, just kidding).
Compare this to South East Asian countries like Philippines, Malaysia, Indonesia, Cambodia, etc. Despite still developing they are generally much more happier and have a fulfilling life. Why? because they are relatively laid back and just enjoy life as much as they can.
To add to your example, in fiction I agree with the "carpe diem" motto of the Dead Poets Society movie. Also Olgierd Von Everec in Witcher 3 which is described as a man who partied like there is no tomorrow.As I mentioned earlier, I really like the dynamic between Jeremy Clarkson, James May and the little guy (I do know his name, I just like saying little guy). They all love cars and they go on adventures. I'm sure they're all responsible adults too but that doesn't mean they don't have fun and do silly things.
In real life I agree with people like RVF's Fisto who traveled to SEA, Maha Vajiralongkorn and Jefri Bolkiah who does not care what others think about them and just keep doing things they enjoy