As most of us are in salaried positions, essentially, we are required to invest time proportionate to the income we earn. It is a linear relationship between hours and income and, because most of us work full time, there is little we can do to increase those earnings. We must build up other streams of income through investments in equities, properties and the like. And, where employment conditions permit, and you have the time, a family business or side hustle can also be a good money-spinner. In short, the faster you can build your multiple streams of income that don't require a dedicated time investment, the sooner you can become financially independent. This will reduce your financial reliance on a salaried position and thereby create optionality for early retirement or other adventures you may have on your mind.