Translation of "생각했고" in English

정말 수없이 들으면서, 상투적인 말이라고 생각했고,

I'd heard that so many times, I thought it was a cliché,

저는 모든 걸 이미 잘할 줄 알아야 한다고 생각했고

I thought that I should know how to do everything already,