I think mostly it’s a matter of interest. If you enjoy doing something, you will be more willing to listen and learn how to do it, and be better at it. But, some people just have a natural tendency towards certain things, and some people have a natural tendency away from certain things. Maybe you like maths but you still find it hard to grasp. That’s unfortunate, but sometimes just how it goes. Maybe you just need to apply yourself a bit more than the person who can grasp it straight away, but you’ll get there eventually. Maybe you learn in a different way to them, they might have a photographic memory and you don’t, it could be any number of reasons.