The author compares renovating a new home to learning how to trade successfully. Just as some homeowners do subpar renovation work themselves without professional expertise, many aspiring traders try to learn trading on their own without proper support and guidance. This often leads to losing money and eventually giving up, similar to flaws appearing over time in DIY renovations. The author advocates apprenticing under an experienced mentor, as tradespeople do, to properly hone skills and avoid costly mistakes made by self-taught novice traders.