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.
(..) She dating yet? You better watch your mouth. I thank God I got three boys, man. You're in for a rough ride, Jack. Payback's a bitch and her stripper name is Karma. You come up with that on your own? I saw it on (..)2016 13 Hours