If you can't read the paragraphs where he goes over several of his flaws and how they led to his failures, shortcomings and misses in several aspects of his life - both personal and professional - I don't know what to tell you.
The DOGE section is particularly cringe inducing, as it should have been 2-3 sentences, but is instead paragraphs of self-congratulatory filler the likes of which only politics can attain. Tangentially related (even though the article is purportedly about happiness), being involved in politcs is generally agreed as being a poor path to happiness (for well-adjusted people anyway, which perhaps the author isn't).
Having children would be the logical next step in a financially successful life, but it seems as though the author also probably burned that bridge.
There are many tactful, helpful articles describing why money doesn't buy happiness, this isn't one of them.