When Sumireko was young, her inability to express herself often led to trouble with her friends. One day, she ran from them and ended up at a strange bookshop. The woman there recommended a book and offered a suggestion to help her speak more easily.
I know you can.
.بالتأكيد
Das schaffst du.
Bien sûr que si.
Certo che sì.
Sei que consegue.
Непременно.