Perseverance counts for a lot. Someone who doesn't have much aptitude for such things but is willing to put in a lot of effort toward mastering them may accomplish far more would be predicted by an aptitude assessment, and efforts to assist them in their mastery of the subjects may be worthwhile. On the other hand, if someone lacks the aptitude to learn easily and the perseverance to push on anyway, there's no use trying to teach the subject unless or until their they get ability and desire to persevere.
A favorite quote.
“Nothing in this world can take the place of persistence. Talent will not; nothing is more common than unsuccessful people with talent. Genius will not; unrewarded genius is almost a proverb. Education will not; the world is full of educated derelicts. Persistence and determination alone are omnipotent. The slogan “press on” has solved and always will solve the problems of the human race”
Calvin Coolidge quotes (American 30th President of the United States, 1872-1933)