Usually people get anxious and frenetic for new sources of income, to find new jobs, so they can maximize their patrimony as soon as possible, but many of them forget you don't accumulate wealth only when receiving money or being paid by others for a work. We can also decrease our expenses and stop third-partying tasks we can do ourselves, so at the end of a monthly cycle we will have earned more money to invest and make it grow overtime.
People create so many worthless fixed expenses nowadays. It can be monthly subscriptions of services they barely use, eating out too often, purchasing superfluous clothes, accessories and items in general just for vanity towards the society. Sometimes people have all the tools they need on their hands to finish a solid building, however, since they don't know how to use them properly, it will look like they constantly need more and more tools indefinitely.
Saving is also a good way to earn more, but unfortunately most of the people find it hard to save even those who are big earners in the society. Maybe one reason is that they always spend more than their income, so even if they have other resources of income, earning and saving money is still not possible. Where in the real fact is, you will also earn more if you start to manage your funds and buy only those things that are necessary. But of course, having investments or another sources of income gives you bigger chances to earn and save more money to grow.