Habits are what define us. Good or bad. They are those things we do repeatedly and consistently, almost without noticing we do them, and have become part of us. Habit is more than just WHAT you do, but also HOW you do them.
We have habits in different core areas of our life - eating habits, reading habits, thinking habits, sleeping habits, work habits, and our focus for this discussion, money and spending habits - all of these and more together form character; and as you know, character determines destiny. A man's character determines where he ends up in life.