I started off counting kcals, and then moved to simply watching portions (still choosing whole grains and other good stuff, mind) after a while. I was dropping around a pound a week doing this, which is about half the rate of before.
I've gained some weight after a two month holiday of crazy eating/drinking, and much as I'd like to drop it quickly, I know that I'll be more successful in the long run if I practise portion control rather than obsessively count every kcal that passes my lips. So, that's what I'm getting into again. I love it because it's virtually effortless. And I'm inherently lazy.
That said, I still
weigh/measure a lot of my food. I do this as my way of determining what constitutes a reasonable portion. If I'm fancying beans or cottage cheese, I'll measure out half a cup, say, and class that as one portion. Using a measuring cup is no more hassle than jollupping it out with a spoon. I might occasionally weigh a piece of cheese, fish, or meat to check it's around the right size, but I pretty much have that off pat now. For some reason, I cannot successfully eyeball what constitutes a tablespoonful of anything though. Every time I try, I'm so far out it's laughable.
I wholeheartedly agree with you about finding something that's sustainable. Early on in my journey I thought that counting kcals was something I could do forever. That was before my inner brat started misbehaving.
If I wanted something for 150 kcals, but had only 100 left for the day, I found I would metaphorically stamp my foot, and end up eating way more than that extra 50 kcals. It's a head thing with me. Now if I want something, I simply have one portion. Generally, this is quite sufficient.
It's not foolproof or perfect, but with some discipline it works well enough for me. Give it a try for a few weeks to see how it goes for you.