I would say that to improve one's financial situation, one should seek more sources of income; however, one thing about the standard of living is that the more income and financial stability one gains, the level of financial living also increases. The main goal is to concentrate on saving and investing, because if you focus on improving your financial living, you may end up not saving or investing at all.
Exactly when you earn more through different streams of income, the standard of living increases alongside that's to say depending on one source of income can't create a balance for ones financial stability, but sometimes some person's savings plan can't improve their standard of living which is why you find them taking koans and being in debt. But having a multi streams income can ensbke one achieve that.
If you have the capability to find alternative options on how to earn money, why not? Because it will assist you in augmenting your income and so you won't have problems addressing your needs and other items in your priority list. That's your minimum goal, to pay your bills and have a decent living. The extra will go to savings and for your emergency needs.