Well, it is very important for you to build passive income for your financial security. However, building passive income is not easy, in fact there are a lot of problems. One of the major problems is that building passive income can be time consuming. If you are trying to build passive income through investment, the time taken varies based on the investment type. For example. real estate investments can yield passive income quickly through rental returns. However, it might take a while to earn returns from stock market. Likewise, your own products may take longer to generate passive income for you.