We're brainwashed to notice the inadequate. There is no grand scheme conspiracy, we're just awash in a sea of media that remind us what we don't have and what's available for purchase if you just act now.
There are no commercials to remind us to breathe and be grateful. You need to do that on your own. As often as possible.
It's simple but not easy - remember to be happy.
Source: https://time.com/120425/how-5-post-it-notes-can-make-you-happy-confident-and-successful/