Building long-term wealth through passive income requires realistic planning, patience, and consistency. Realistic passive income ideas include dividend-paying stocks, index funds, rental properties, peer-to-peer lending, and digital products like e-books or online courses. These options may not make you rich overnight, but they create steady income over time with disciplined investment. Reinvesting earnings, managing risks, and staying invested for the long term are key to success. True passive income often needs initial effort or capital, but once established, it can support financial stability, reduce dependence on active work, and help you achieve sustainable wealth growth over the years.