No plan can prevent a stupid person from doing the wrong thing in the wrong place at the wrong time - but a good plan should keep a concentration from forming. ↗
A lot of my characters in all of my books have a self-destructive urge. They'll do precisely the thing that they know is wrong, take a perverse delight in doing the wrong thing. ↗
The real key is to live in an environment where the mind feels free to choose the right thing instead of being compelled by habit and inertia to choose the wrong thing. ↗
In any moment of decision, the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing. ↗