Things have a nasty 'habit of not turning out' the way you expect them to. [=things often do not turn out the way you expect them to]
He reached into his pocket for his keys 'by/from force of habit'. [=he did it without thinking because it is what he usually does]
I'm 'not in the habit of' making predictions, but I don't think there's much doubt about who will win this election.
(..) You want a... You want a pork chop, honey? - Yes. Thank you. - Hot, hot! See? Look at your sister, great eating habits. Yeah, but she's older! - There you go. - Got it? Okay. I built it for the kids in the neighborhood. (..)2009 The Lovely Bones