habit

1 - I got into the habit of calling in on my grandfather on my way home.

2 - If you have learnt to love books as a child, the reading habit will never desert you.

3 - The links between cigarette smoking and cancer ( particularly lung cancer) are now well understood, and have led to many smokers giving up the habit

4 - College-age women that smoke report they keep up the habit largely to avoid gaining weight.

5 - Smoking is an expensive habit, and the price of cigarettes continues to rise.