in the habit

See: addicted
References in classic literature ?
I grieve to state so distressing a fact, but the inhabitants of Typee were in the habit of devouring fish much in the same way that a civilized being would eat a radish, and without any more previous preparation.
Let no one imagine, however, that the lovely Fayaway was in the habit of swallowing great vulgar-looking fishes: oh, no; with her beautiful small hand she would clasp a delicate, little, golden-hued love of a fish and eat it as elegantly and as innocently as though it were a Naples biscuit.
He lifted the latch, and turned into the bright bar or kitchen on the right hand, where the less lofty customers of the house were in the habit of assembling, the parlour on the left being reserved for the more select society in which Squire Cass frequently enjoyed the double pleasure of conviviality and condescension.
He fell in love, as men are in the habit of doing, and pressed his suit with an earnestness and an ardor which left nothing to be desired.
Not having been actually present on this occasion, should I proceed to relate ALL that passed, or that I fancied passed, it would be degrading myself to the level of those newspapers which are in the habit of retailing private conversations, and which, like most small dealers in such things, never retail fairly.
The former -- if at least they would assert their claim to be really and truly Circles, and not mere high-class Polygons with an infinitely large number of infinitesimally small sides -- were in the habit of boasting (what Women confessed and deplored) that they also had no sides, being blessed with a perimeter of one line, or, in other words, a Circumference.
Secondly): That we are by no means always in the habit of bestowing our love on the objects which are the most deserving of it, in the opinions of our friends.
A spokesperson for the Saltburn, Marske and New Marske neighbourhood police team said: "Please can we all get in the habit of checking and double checking that our vehicles are locked and not give people the opportunity to gain entry easily.
The number of break-ins tends to rise during September and October when homeowners are still in the habit of leaving windows and doors open or unlocked.
They're not in the habit of calling anything a good idea, which given the last 18 years is hardly surprising.