Hi vikingpigeon,
No you are not alone in finding it hard.Personally, I'd ditch worrying about calories. Portion control will actually decrease those calories without giving you extra numbers to worry about. A good tip for reducing portion sizes, is to put your meal on a smaller plate. sounds daft but It's a psychological thing. With a smaller plate that is full,you'll feel you still have a 'complete' meal.
Some find low-carbing easier than others. Perhaps you are trying to do too much, too soon. By all means reduce those carbs. but perhaps take smaller steps in reducing them. You can reduce a bit more as you go along if you feel you need to. We are all different and adjusting your carb. intake and portion size is something only you can work out for yourself. Do not feel alone though. Each of us on this forum has been where you are right now.
As for members 'finding their right food in a matter of days', don't you believe it.It's taken me yonks to work out what likes my body and what doesn't. Even the most successful low-carbers spent many months finding what suits them perfectly.Take a look at the recipes on the low-carb. forum for ideas and don't be afraid to experiment with your own ideas.
I presume you test your blood sugars? This one thing, more than anything else, is what will help you ascertain what foods suits YOU. Test, test and test again and eventually, you'll know with some certainty which foods fully to avoid and which ones to go easy on.
Do you exercise? Even if you are not a gym lover, brisk walking is hugely beneficial. It will make those blood sugars come down, help get the weight off and best of all it's free. See if the NHS run a Healthwalks scheme in your area. They are aimed at folks just like you and me and joining up was one of the best things I ever did.
Well, enough rabbiting from me. I hope I've given you some food for thought but be proud of yourself for wanting to sort things. That's half the battle.
All the best, chocoholic.