"成功とはこの世のあらゆることについて心配しなければならないことです"

Simplified Meaning:

When someone becomes successful, they often have a lot more responsibilities and things to think about. For example, imagine a person who starts a small business. When the business grows and becomes very successful, the owner can't just focus on one thing anymore. They need to think about their employees, finances, customer satisfaction, and much more. This can create a lot of stress and worry. Being successful means you're responsible for a lot of things, which can be overwhelming. It's like if you become the leader of a big project at school or work; suddenly, you have to make sure everything goes right. Applying this idea to life, someone aiming for success should be ready to handle many different tasks and challenges. Managing all these new concerns well is a big part of what makes someone truly successful.