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.
(..) that is worse than you? Oh, what is it? What is it? Wow! A puppy! You've got a friend in me You've got a friend in me When the road looks rough ahead And you're miles and miles from your nice, warm bed You just remember what your old pal said Boy, you've got a friend in me (..)1995 Toy Story
(..) You're my favourite deputy. You've got a friend in me You've got a friend in me Come on, let's wrangle up the cattle. When the road looks rough ahead And you're miles and miles from your nice, warm bed Round 'em up, cowboy! Just remember what your old pal said (..)1995 Toy Story