to have difficulty doing sth :
You'll have a job convincing them that you're right.
He had a hard job to make himself heard.
to have difficulty doing sth :
You'll have a job convincing them that you're right.
He had a hard job to make himself heard.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005