Thank you for the advice, a theory that many people know but cannot always be applied, especially when there are difficult times, such as looking for additional income and also saving because the price of basic necessities has risen and side jobs are difficult to find because the economy of the country where we live is indeed are in trouble, that's why one way to survive in difficult times is to prepare yourself, by doing everything you say first because it's much easier to do when things aren't difficult, saving and investing is also one way we can stay safe in difficult times.
So preparing before the difficult times come will make us much better than doing it in difficult times.