When we do things we're good at, we feel a sense of pride and accomplishment. Confidence stems from there. And not only do it, but do it often. It'll remind you how awesome you are.  Being good at something, mastering a skill, gives us personality, gives us something to talk about, and makes us interesting in addition to giving us a sense of fulfillment. Make sure to try things that are new to you as well. Trying new things helps you to build new skills and discover more about who you are. This will help to build your confidence. Part of lacking confidence comes from not really understanding people. To get around this, talk to everyone. Even if it's just small talk, talk to everyone. Here's what you'll probably learn:  Most people are friendly enough. They're not out to get you or to judge you. In fact, they'll probably enjoy talking to you and you to them. Most people don't like initiating either. They'll open up if you make the first move. They're just as nervous as you are to put yourself out there. People get cliquey. They stick to what they know and they don't like to deviate much. This is boring. Don't do it. You'll learn so much more from people who are different than you. The more you talk to people the less scary it gets, the less you're concerned with what they think of you, the less you'll think about how great everyone is and the more you'll realize that most people are completely average. When no one else is a big deal, you have no reason to care so much about how you come off. And the more you talk to people, the more you'll get down this socializing thing. It can be pretty intimidating, but won't be after 100 times of the exact same small talk you find over and over. If you don't know how or where to start, you can read How to Be Extroverted, How to Be a Social Butterfly and How to Be Outgoing. Remember that positivity thing we talked about a while back? Turns out people like that. Let them know you're pretty good at it by complimenting them. It's sort of like "giving is better than receiving."...

How would you rephrase that briefly using Vietnamese?
Thực hiện một điều gì đó mà bạn giỏi. Trò chuyện với mọi người. Không ngừng trò chuyện với mọi người. Khen tặng người khác. Quan sát thái độ của bản thân và của mọi người xung quanh bạn. Tìm kiếm hình mẫu tiêu biểu chân thật. Thành thật với chính mình.