“Gravity is a habit that is hard to shake off.”
“It's hard to dance with the Devil on your back, So shake him off.”
“Shaking off, with one mighty effort the fetters of habit, the leaden weight of routine, the cloak of many cares and the slavery of home, man feels once more happy.”
“Change becomes a habit and habits are hard to change .”
“Bad habits: easy to develop and hard to live with. Good habits: hard to develop and easy to live with.”
“Old habits are hard to forget, and old fears are habits.”