Earning money is hard for sure, saving money is too hard but getting rich and being able to live comfortably is not for everyone 
Earning money no matter how little it is, as far as it's consistent, you'll be able to make a save with proper planning. Although, saving money is the first step to start from but it doesn't guarantee richness.
However, getting rich and being able to live comfortably are two different things. Some people are rich but they aren't living comfortably while some are living comfortably but they aren't rich. Living comfortably comes from contentment and not from your financial status.
Earning money is hard but spending out its easily until forget for saving our spent few percent for investment assets, I believe many people want have much saving and other side keep spent few percent of their money for investment but difficulty to manage well during small income and bigger outcome. Firstly if want have much saving money and keep consistent spent for investing, need not only one passive income but also have side job we can manage well for saving, daily outcome until how much percent allocated for investing. Earning money no matter how little it is, as far as it's consistent, you'll be able to make a save with proper planning. Although, saving money is the first step to start from but it doesn't guarantee richness.
However, getting rich and being able to live comfortably are two different things. Some people are rich but they aren't living comfortably while some are living comfortably but they aren't rich. Living comfortably comes from contentment and not from your financial status.
If earning money still small looks difficult for spending to investment assets although we can earn its consistent, not easily when managing small money for outcome and keep spend it for investment assets. If want invest firstly have bigger income and small outcome its easily how to increase our money for the future.