"2 formerly obese economists lost a combined 120 pounds in 18 months — here are the best tricks they used"

I didn't use any of them. But one of the secrets of weight loss is that different things work for different people. I found after reading a fair amount, I still needed a lot of trial and error.

Although somewhat contradicting my first statement, one wag cracked that almost all successful diet advice amounts to this: Eat more vegetables. Lots more.

Which was going to give me trouble, but then I read what a famous cook--I no longer remember who--said: "Show me somebody who doesn't like vegetables and I'll show you someone who hasn't had them prepared well." I now agree. You will probably want either fat (olive oil, butter, cheese) or heat (roasting) or spices. Or all three.

Related to the economists' advice: The Economist, "The economists’ diet" and "Is This the Most Controversial Diet of 2018?"