Showing one's best is essentially different from showing off. It is a quality not everybody can be good at.

从本质上来说，展示最好的自己与炫耀是完全不同的。它是一种特质，这不是人人都善于（使用）的。

In order to show your best, you are advised to do three things. First, you should equip yourself with the knowledge you can acquire. Only thus can you be confident of yourself. Second in importance is a good command of verbal skills. This is how effectively you will be able to make yourself convincing. My last advice is modesty. Don't let others suspect you are being arrogant and showing off.

为了能够展示最好的自己，建议你做到三件事。第一，你应该用你学习到的知识来装备自己，只有这样你才能相信自己。第二重要的是运用口语技巧，这能让你有效成为一个令人信服的人。我最后的建议是谦逊，不要让别人怀疑你是傲慢的与炫耀的（人）。