The Illusion of Evil Choice

If we have perfect knowledge that X is the best thing for me to do right now, then I will necessarily do X. What kind of knowledge are we talking about? If you say that the intellect proposes things to the will, the will desires goodness as such. So we can know multiple goods, multiple incompatible goods. Is this a habitual knowledge? Is it a knowledge that we have actually in the moment? Or how does that work exactly?