What makes an action truly good is not having chosen to follow a rule, but having become the kind of person who sees and does what the situation calls for.

Supports

Following a rule does not suffice to make an action good for certain: one can know it and apply it grudgingly, out of interest, or at the wrong moment. The occasionally just man is not yet the just man.
What makes a person act well consistently is a lasting disposition of character: the one who has become just does the just thing regularly, gladly, and for its own sake, without consulting a rule each time.
And this disposition, unlike a rule fixed in advance, stays attentive to what is particular in each situation: the person endowed with perceives what this precise case demands, where a general rule, unable to foresee everything, must sometimes betray it.

Therefore So the ground of right action is a good character, not the observance of a rule or the calculation of effects: to act well is to have become the one who sees and does what the moment demands.

How far does this reasoning convince you?

Not at all

Entirely

Put to the test

But what exactly should I do?

Problem

Being good or acting rightly