Most people overcomplicate investing and sabotage their wealth through psychology, poor goal-setting, and fear-based decisions. Portfolio Manager Ben Felix reveals why index funds beat 90% of professionals, why buying a house isn't always smart, and the 10 financial mistakes quietly keeping you broke—backed by academic research, not sales tactics. Checking your investment portfolio frequently reduces risk-taking and lowers long-term returns because daily volatility feels emotionally stressful, even though stocks are safer for long-term investors than most believe.