Life HacksSheryl Sandberg, Bill Gates and Richard Branson All Use This Productivity TrickBusiness Insider3:35 PM ET
Some of the biggest names in business use a surprisingly old school organizational and productivity trick.
Microsoft founder Bill Gates, Virgin founder Richard Branson, and Facebook COO Sheryl Sandberg all carry around notebooks.
Gates and Branson use their notebooks to record ideas. By keeping a pen and paper handy, these two moguls are able to keep track of and remember all the inklings that come to them throughout the day.
Read more: A day in the life of billionaire Richard Branson, who always carries a pen, despises ties, and drinks up to 20 cups of tea a day
"I can't tell you where I'd be if I hadn't had a pen on hand to write down my ideas as soon as they came to me," Branson wrote in a blog post.
Sandberg uses her notebook as a sort of daily planner, according to Fortune. She scribbles down to-do lists and then rips out pages once she's hit all the items on her list. It's a great motivator for staying on track — there's nothing more satisfying than crossing off everything on your to-do list.
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Read more: Inside the daily routine of billionaire Bill Gates, who loves cheeseburgers, tours missile silos, and washes the dishes every night
Regardless of how exactly they use their notebooks, these business leaders are all onto something.
TED speaker Damon Brown wrote in Inc. that writing things down helps us filter our thoughts, remember ideas and insights, and articulate the abstract.
Forbes contributor Drew Hansen says that the key is to always jot down your thoughts straight away: "You think you'll remember, but you won't, and you'll forfeit all the thoughts that flood you after you've freed your mind from remembering the initial spark."
Read more: A day in the life of Sheryl Sandberg, who uses an old-school notebook, likes 'bad TV,' and goes to bed before 10
It might be old-school, but it works.
This article originally appeared on BusinessInsider.com