Boost your passive income from a diversified portfolio of stocks using ETFs.Dividend stocks and exchange-traded funds (ETFs) don't look all that appealing when the S&P 500 is making a new all-time high seemingly every week. However, folks who want to implement a passive income strategy to achieve a long-term financial goal may find high-yield ETFs an excellent choice for investing in the market without having the total return solely depend on stock prices going up.After accounting for immediate and near-ter ...