To take a trivial example, say your problem is that you leave clothes all over your bedroom floor, so you decide to set up a system to solve that.
The naive approach is to design a system like "If it's too dirty to wear again, put it in the laundry basket, coded by light or dark. If it's clean, decide if it should go on a hanger or in a drawer. If it needs a hanger, hang it up, being careful to select the right kind of hanger for the right kind of clothing. If it needs to go in a drawer..."
That's the system I want to design because that's how I want my life to be.
It would feel very unnatural to design a system like "pile all clothes on the chair in the corner and worry about them later", because I don't want my life to be like that, and I don't want to believe that that's the only kind of system I might have a chance of sticking to.
But that is the only kind of system I'll stick to. And ultimately, it's much better to have all your clothes piled on the chair in the corner rather than strewn all over the bedroom floor.