20 Costly Financial Mistakes to Avoid in Your 20s, 30s and 40s

Skipping the employer match is leaving 100% free money on the table.

Debt

Carrying credit card balances at 20%+ while investing is usually mathematically wrong.

Investing

Timing the market and panic selling destroy long-term returns.

Conclusion

Automate good behaviors—savings, debt paydown, index investing—and review once a year.