" Warren Buffet as saying the following: “The difference between successful people and very successful people is that very successful people say ‘no’ to almost everything.” Buffet’s remark mirrors a comment made by Steve Jobs while giving a presentation at the Apple Worldwide Developers Conference (WWDC) in 1997. He noted: “Focusing is about saying no. "

― Damon Zahariades , The 30-Day Productivity Boost (Vol. 1): 30 Bad Habits That Are Sabotaging Your Time Management (And How To Fix Them!)