Building long-term wealth starts with a smart foundation—and for investors under 40, that means balancing growth, income, and diversification. In this post, I share my favorite ETF-based portfolio strategy, designed specifically for those aged 39 and younger. With exposure to U.S. stocks across all market caps, global markets, REITs, high-yield dividends, and even a small direct allocation to crypto, this portfolio blends aggressive growth potential with financial resilience.