One handful is quite convenient.
You carry it with you as a unit of measure wherever you go.
When it comes to nuts, for example, one handful of nuts conveniently weight about 2 ounces … which is an appropriate portion size for a snack.
One handful of chocolate or candy … also a good ‘handy’ measure of restraint.
Allow yourself one handful.
Use your handful to your advantage.
It’s there for a reason.