He's 'having a rough time (of it)'. = He's 'going through a rough time'. [=he is having a difficult time; his life has been difficult recently]
The project still has a few 'rough edges'. [=the project still has a few things that need to be changed or finished]
Don't 'be so rough on them' [=don't punish or criticize them so harshly] for making a mistake.
(..) Now here you are, your enemy's squire. - Careful, Imp. - I've offended you. Forgive me, it's been a rough morning. Anyway, don't despair. I'm a constant disappointment to my own father and I've learned to live with it. - Your next tumble with Ros is on me. (..)2011 TvShow: Game of Thrones Title: Cripples, Bastards, and Broken Things Season: 1 Episode 4