What should i do if i dont want certain people on my friends list on facebook to see what i do?

[Arsalan]

I dont want certain people to see what posts i like or comment on or share on other people's walls

[askmeaquestion]

Block them or delete them

[Facile]

If you don't want to delete them, but you don't want them to see your statuses or certain photo album,s you can setup privacy in your account and enter their names to stop them from seeing certain information or photos.

[mhmm_2007]

you can post on your wall and select who can see it
public
friend of friend
or custom