It's true that we aren't always going to succeed in our ventures, even if we put in effort. Results are never guaranteed and life has a way of throwing curve balls at us.——诚然，有时即使我们付出了努力，也未必能成功。谁也不能保证生活是一帆风顺的，有时，它会跟你打擦边球。

还好有翻译！