As the proverb says, a journey starts with a single step so begin with the pile closest to you and just set aside one hour at a time to go through each piece of paper and decide immediately whether you will recycle it, toss it, delegate it, file it or deal with it right away or later.
In a strange twist on the proverb about not putting all your eggs in one basket, she divides the resources needed to produce a single healthy offspring into two.