Question

believe you can, and you will.

Answer 1

believe you can, and you will.
相信你可以，你会。
1
Believe you can succeed and you will!
相信你可以成功，你就可以成功！

2
When you believe you can do it and the things, you will find things are not difficult, others can do it, of course, you can also.
当你相信自己能、而能面对事情时，你终会发现：事情并不棘手难办，别人能、当然，你也能。

Answer 2

Believe you can, and you will.
相信你可以，然后你就能做到。