Stop worrying about whether or not you can do something and just do it.  The number one regret of the terminally ill, as reported by a palliative nurse, was not being courageous enough to ignore others' expectations and live their own lives.  Focus on being curious rather than anxious.  You don't always know where life will take you. Erase any expectations you have about pulling it off. The journey itself is a big part of discovering what fulfills you. Big or small, keep trying out new things.  Most people find their passions in their free time by doing things they are interested in and sometimes discover something else they want to do more.  At least once a month, do something significant you've never done before to broaden your perspective.  Go on a trip to a place you've never visited. Try out a different type of cuisine. Pick up a new hobby to see if you like it. Look into careers that interest you.  Read as much as you can about them.  Study those you admire that live their lives with passion.  Take a class—in person or online—in that field. Interview current professionals to find out what their real-world jobs are like and how they got there. Did it require a special degree or years of training? Make as many mistakes as you possibly can. You learn from them. In developing your passion, you created a plan for action.  Make sure you are following it consistently.    Check that your plan had a series of smaller goals that are achievable in short time-frames. Keep track of your progress and achievements in your journal. Write down how each step went, what you learned, and what, if anything, you need to change about future actions. Update your plan with new information as necessary. What is most frustrating about your life right now? Is it your job, your personal relationships, where you live?  Isolate the primary cause of your lackluster outlook on life so that you can address it effectively.  Be specific about why you are unhappy with this situation.  Was there a time when you were happy with these things?...

TL;DR in Vietnamese:
Tạm biệt nỗi sợ. Thử điều gì đó mới mẻ một lần một tuần. Học hỏi mọi kiến thức có thể. Làm theo kế hoạch! Thay đổi một phần cuộc sống khiến bạn nản chí nhất. Ở bên cạnh những người luôn ủng hộ và truyền cảm hứng.