What we call habits do not automatically become part of us, though some may want to somewhat link them with our genetic makeup. But I strongly believe that most of our habits were picked up consciously or unconsciously from our environment -- from a sibling, a friend, an uncle, a teacher, etc. And bad habits are like darkness that cloud our best or light from shinning.
Like you've rightly noted, it's only God that can help one break away from some devious habits. Scriptures encourages us to have the mind of Christ. Hence, every habit the negates the Christ kind of mindest or attitude is worth disengaging from, through the help of the Holyspirit.
Thanks for sharing this nice writeup @peteron.
Kind regards.