"大多数人之所以在生活中失败，不是因为他们目标定得太高而未能实现，而是因为他们目标定得太低并达到了。"

Simplified Meaning:

Sometimes people don't succeed because they don't set big enough goals. They might choose easy targets because they don't want to risk failing. Imagine you're playing a game where you have to throw a ball into a basket. If you stand really close, it's easy to make the shot, but you don't improve or learn much. If you stand farther away, you might miss, but trying helps you get better and pushes you to work harder. Aiming low might mean you avoid challenges and stay in your comfort zone. For example, if a student only plans to pass their exams without aiming for higher grades, they won't study as hard or learn as much as they could. Aiming higher can lead to personal growth and greater achievements, even if it seems tougher initially. Instead of settling for what’s simple and easy, it's important to challenge yourself and have bigger aspirations. This way, you can discover your true potential and achieve more than you thought possible. Even if you don't hit every big target, the effort you put in will teach you valuable lessons and lead to greater rewards in the long run.