A solid opening lead sets the tone for the entire defense. Rather than leading on autopilot, we consider the auction, the vulnerability, and the message you want to send, so your first card gives your side the best chance from trick one.
Declarer play rewards patience and planning. Before touching a single card from dummy, count your winners and losers, picture the layout that gives you trouble, and build a line of play that protects against the bad breaks you can actually do something about.