On this week’s Rule Breakers podcast, Motley Fool co-founder David Gardner brings in a special guest — Megan Brinsfield of Motley Fool Wealth Management — to assist him in explaining the ins and outs of tax-loss harvesting to a young investor who is looking to cut his IRS bill, but who still really believes in the current “losers” in his portfolio. That makes it tougher, because there are a number of rules the government has put in place to make this technique harder to implement.