"与21岁时不同，那时你觉得有无限的机会。到了33岁，结局近得多。"

Simplified Meaning:

When you’re 21, it feels like you have countless chances to do things in life, such as choosing careers, traveling, or finding a partner. You believe you have all the time in the world to explore different paths. But when you reach your 30s, reality hits, and you realize that time is passing quickly, and those endless opportunities are becoming fewer. You start to feel more pressure to make decisions because you understand that you don't have as much time as you once thought. Imagine a student just graduating from college. They might feel like they can try different jobs and still have plenty of time to find the right one. However, someone in their early 30s might start feeling anxious about their career direction, worrying that they need to settle down quickly because they are getting older. This shift in perspective shows the urgency that comes with age and the importance of making thoughtful choices while you still have time. Applying this idea to your own life, it’s good to balance enjoying your youth with making long-term plans, so you don’t feel rushed later on.