How can you apply flywheel thinking to your company’s budget?

By investing as much money into things that drive customer happiness—such as support teams and product improvements—as you do into acquiring new customers through marketing and sales.
By making sure funds are evenly distributed to each section of the flywheel. Marketing, sales, and customer support should each have equal proportions of the overall budget.
If your flywheel is truly successful, you won’t need to allocate resources to marketing at all because customer word of mouth will provide all of your new prospects.
If your flywheel ever slows down, you can speed it back up by funding more customer discounts.