I've been overweight and I've been a normal weight, I've gone repeatedly between being both states a number of times since I was of an age when it was easy to be naturally thin. I'm of an age now to know exactly what causes it me to become overweight. You don't have to diet in order to get to a healthy weight, you just have to act in a way our bodies are designed to work. When I want to lose weight (and I mean 8-10kgs, so we aren't talking just a little bit). I go back to the way our bodies are designed to work, it really is that simple.
(1) I eat when my mind tells me "yes, now you come to mention it I am hungry". I don't wait until I'm faint with hunger.
(2) Eat a normal balanced diet. I eat very slowly, sitting down with a knife and fork. I put them down in between mouthfuls. I chew and conciously savour the flavour. I take time to think... hey I'm eating food. When I've finished my mouthful, I don't immediately rush the next one into my mouth like I'm just a machine for turning food into waste. I consciously register that I'm eating. The brain takes at least 20 minutes to register that it's eaten. I eat very slowly, enjoying the texture and flavour.
(3) The very minute I stop feeling hunger and the body has just moved into a neutral feeling of being satisfied, neither hungry or slightly full, just neutral, I put down my knife and fork and stop. If there is something on my plate, I don't finish it, I leave it (you will get used to what a normal portion size is). This is the hard part as we are so used to eating much larger portions than we would have been served 50 years ago. For reference, go and look at the growth in portion size over the last 50 years. The change in the size of dinner plates is a bit of a giveaway, they have gone from 8"-9" in 1960 to 11"-12" by 2010 (that's twice as large in surface area).
(4) Stick to meal times, don't graze. Also, alcohol consumption had gone through the roof in the last 60 years, this is laden with calories.
(5) Move more, e.g. walk. Not only is this good for you but it builds muscle. Even resting muscle burns energy in a way that fat doesn't.
I guarantee you will lose weight. No need to count calories just keep to this behaviour which was normal behaviour back in '60s and '70s and why most people looked different back then. You didn't eat in the street or graze on the go, there weren't opportunities to buy snacks at every turn of the head. The portions were much smaller. If we all did this, more of us would look like we did as a nation back in the '60s and '70s.