When I'm working on a project, doing my taxes, planning a kids' art class, researching a book, piles tend to sprout like mushrooms. Although I keep things in control, there will be hours (or days) of stacked stuff.
Nowadays, these piles focus my attention (this is what I'm supposed to be doing!). As a kid and young adult, piles meant that things needed to get put away ... and that I needed to decide where that was.
Is there a pile of stuff on the floor of one of your rooms? Is that the best space for those items? Where should the items go? Why can’t you put them there?
You may find that two or three areas need to be cleaned so something can get put away in the proper space. You’ve likely held off on doing the task because it seems so large. Identify what needs to be done. Write down the steps to clarify the actions in your mind.
For additional insights, check out these articles, "Why Do Piles of Stuff Seem to Spontaneously Appear in Your House?" and "Why You Need to Declutter Before You Start Decluttering."