English Proverb: Take care of the pennies, and the pounds will take care of themselves
This one sounds very British because we have pennies and pounds, right? The idiom can be used in any English speaking country because the meaning is easily understood internationally.
Take care of the pennies, and the pounds will take care of themselves means that if you do the small things correctly, they can add up to become a big success.
For example, if you create a savings plan to invest a small amount of money every month when you retire you will have a nest egg saved for your retirement.
As another example, if you consistently study hard on a daily basis when you are a university student you’ll have little trouble successfully graduating.