Another example, people who steal money in small or big amounts. It gets so addictive that it becomes part of their attitude, a part of their personality. Same holds true for people who get into debt (I'm referring to bad debt). Get into debt, and pay the debt with another debt. If however, you got your money from investing it into a business or an asset, you will probably do it the same way for the rest of your life.
No wonder most of us just get contented with our jobs, never seeking any alternative. That's how addictive the way you got your money from is.