"当一个人的全部精力都在努力完成某些困难而有价值的事情时，生活中的普通问题就显得微不足道。"

Simplified Meaning:

When someone focuses all their energy and effort on achieving something challenging and meaningful, everyday problems start to feel small and unimportant. Imagine a student preparing for final exams. They spend hours studying and working hard to do well because passing the exams is really important to them. During this time, small issues like losing their favorite pen or running out of snacks don't bother them much because their mind is fully occupied with the bigger goal. In a similar way, if a person is dedicated to starting their own business, small annoyances like getting stuck in traffic will not affect them as much since they are more concerned with making their dream a reality. By concentrating on significant goals, people can better handle minor inconveniences and not let them ruin their day. This mindset helps people stay motivated and manage stress better in their daily lives.