DIY Investing Mistakes That Could Cost You in Retirement

In this episode of Cowboys & Cufflinks, we break down the most common DIY investing mistakes, how overanalyzing and chasing trends can hurt long-term results, and why structured financial planning matters, especially when preparing for retirement.

If you’re managing your own investments or thinking about it, this episode highlights key risks that can impact your financial future.


In this episode, you’ll learn:

• Why DIY investing often leads to costly mistakes

• The difference between speculation and structured financial planning

• Common retirement planning mistakes investors overlook

• How optimization strategies can improve long-term outcomes

• What global market events actually mean for your portfolio


This episode is designed to help you cut through noise and focus on what actually matters in long-term investing.

Episode Video

Jeff Mathies, CFEd®
CEO, Mathies Financial Partners

Jeff Mathies is a retirement strategist, entrepreneur, and host of Cowboys & Cufflinks. After getting his start in the insurance industry in 2003, Jeff founded Mathies Financial Partners in 2008 and has spent years helping families navigate retirement through education, planning, and real-world experience. As a Certified Financial Educator (CFEd®), he is passionate about simplifying financial concepts and helping people make confident decisions for the future.

Based in Pueblo, Colorado, Jeff enjoys ranch life with his wife and their five children. Outside the office and podcast studio, you’ll usually find him mountain biking, hiking, golfing, or spending time with his kids and grandkids.