"私のキャリアを通じて、他人の認識をコントロールすることはできず、自分の行動だけをコントロールできることに気付きました。"

Simplified Meaning:

In life, you can't change what others think about you, but you can decide how you behave. Imagine you're a student always trying your best in school. Despite your hard work, some classmates might still see you as just average or perhaps not very smart. You can't make them see all the effort you put in or force them to change their mind. What you can do is keep doing your best, studying hard, and focusing on what you can control: your actions and attitude. For example, historical figures like Albert Einstein were sometimes considered slow learners or not very bright in their early years. People had their own opinions about them, but Einstein kept working on what he loved—science. He couldn't make people understand how brilliant he was right away, but his actions eventually showed his true talent. In your own life, don't worry too much about what others think. Focus on what you do and how you treat people. Over time, your consistent actions and efforts can speak for themselves and possibly change perceptions, but even if they don't, you'll know you've done your best.