Avoiding debt is critical to devenir plus riche because high-interest debt, like credit card balances, drains resources that could be invested for growth. For example, a $5,000 credit card balance at 20% interest accrues $1,000 in interest annually, eroding potential savings. Prioritizing debt-free living allows you to allocate more income toward wealth-building tools like investments or real estate. If debt is unavoidable, focus on low-interest options and pay off balances quickly to minimize costs. Strategies like the debt snowball method—paying smallest debts first—build momentum. Avoiding unnecessary loans for depreciating assets, like luxury cars, preserves capital. By staying debt-free or managing debt wisely, you free up resources to compound over time, creating a stronger financial foundation to devenir plus riche and achieve long-term financial security.