Doug Hirsch has a surprisingly simple method for getting the best ideas: setting aside three to four hours of alone time for deep thinking per week.

Hirsch, co-CEO and founder of the prescription drug savings company GoodRx, believes so strongly in the method that he intentionally builds that alone time into his work schedule each week. Finding the time is a challenge — he and co-CEO Trevor Bezdek collectively manage more than 700 employees at a company with a $2.43 billion market capitalization, as of Friday evening.