O anda Boston'da olmak müthiş heyecan vericiydi.
- It was tremendously exciting to be in Boston at that time.
İlerde ne olmak istiyorsun?
- What do you want to be in the future?
See here what it says in Wiktionary. So, you were in the wrong about the meaning of that word.
... And there are things that are going wrong ...
... And there's nothing wrong with a big customer saying to a ...