"La différence entre les personnes qui réussissent et celles qui réussissent vraiment est que celles qui réussissent vraiment disent non à presque tout."

Simplified Meaning:

Successful people achieve their goals and do well, but those who reach the highest levels are very careful about how they spend their time. They focus on what really matters and say no to almost every other opportunity, request, or distraction that comes their way. For example, imagine a top athlete. To remain at the top of their game, they can’t participate in every social event or try out every new hobby. Instead, they focus intensely on their training and rest. Similarly, in your own life, if you want to achieve a big goal, like getting a promotion at work, you would need to concentrate your time and energy on tasks that help you grow professionally. You might say no to late-night TV or extra chores that don't align with your main goal. Being selective about where you direct your efforts means you can perform better and make more significant progress in the areas that count the most.