Smart investors always diversify their portfolio because it helps balance risk and protect wealth over the long term. Diversification means spreading investments across different asset classes such as stocks, bonds, real estate, and commodities, as well as across sectors and geographies. When one investment performs poorly, others may perform better, reducing the overall impact of losses. This strategy minimizes dependence on a single asset and smooths returns during market volatility. Diversification also allows investors to capture growth opportunities from multiple areas of the economy. By avoiding overexposure to one risk, smart investors build more stable, resilient portfolios.