Cooking more is one of the easiest ways to eat less.
For starters cooking your own food usually means you are using fresh ingredients which are typically higher in protein, fibre and water.
This helpful trio boosts the bulk and volume of meals (so you feel fuller for longer) without the burden of excessive calories.
Secondly cooking your own food reduces the negative impact of mindless eating.
It is the ease, convenience and accessibility of junk foods, snacks and drinks which makes them so easy to overeat. Much harder if you are having to make them all yourself.