Give your all. Even if you don’t know, trust yourself that you will know it and work hard to learn what you don’t know.
It’s hard. But it’s worth it. If it’s easy, then there is something wrong because everyone can do it. But if it’s hard that’s when the difference can be seen.
Giving your best is what you have to do. The result will be determined later but the most important thing is the process. In the process you will learn. Learn a lot and learn something worth it.
So don’t give up. Give your best in everything you do!