Seneca · On the value of advice
Letters 94.6
Suppose you are trying to reveal to the poor man the art of ‘acting rich’; how can the thing be accomplished as long as his poverty is unaltered? You are trying to make clear to a starveling in what manner he is to act the part of one with a well-filled stomach; the first requisite, however, is to relieve him of the hunger that grips his vitals.
“The same thing, I assure you, holds good of all faults; the faults themselves must be removed, and precepts should not be given which cannot possibly be carried out while the faults remain. Unless you drive out the false opinions under which we suffer, the miser will never receive instruction as to the proper use of his money, nor the coward regarding the way to scorn danger.
Seneca, Letters to Lucilius 94.6, translated by Richard Mott Gummere