The timing of the day in which I eat certain things. I lost 15kg over a year just by cutting sweets and carbs after 4pm. I still ate them, especially in the morning.

And talking about morning - “breakfast like a king, supper like a beggar” also contributed to that weight loss.

Nowadays I am not strict but whenever I see myself going over my weight I first take those two measures up before making any calorie cuts

Edit: although these are food habits, so I don’t know if it really answers your question. Exercise is the other thing that helps, you don’t even need a lot of it