Translation of cuidadosamente

I congratulate you on your move to become a private Spanish teacher. People need to believe in you and the most important thing is that you need to believe in yourself. It won't be easy at the beginning.
As I understood from you, the redirection, as you implemented it now would not be necessary. From our phone conversation last week I understood that all language instructions are detected by default.
Usually I do not care too much about not getting change, but when you pay a 3 dollar ride with 50 dollars, you do actually expect change. We stood there for a while and neither of us knew what to do.