The more sources of income the better because we never predict how steady jobs will be tomorrow. The mindset of the rich will always be thinking about how to make a lot of money and they make coordinated plans to achieve it. It takes planning as you said because life without a plan will never work and how we can increase our interest in continuing to obtain things in a much better way.
Rich people who are already smart and those who come from poor families will certainly always have a plan to increase their wealth by continuing to find more money with the capital they currently have. So rich people who still have the spirit to work will continue to move with their wise plans and they will not care about people who still complain for various reasons. And from what you said, I think it is also true because everyone clearly cannot guarantee the level of stability of their income for the future so whatever can be done and it can make money, it will be very good to continue to do it without any indication or thought of stopping.
Everyone will certainly always think about how to continue to increase their wealth and also prepare their future to be better than now and with the knowledge they have it will certainly make it very easy for them to collect their wealth over time, having a spirit to work is very important for anyone who wants to increase their wealth and it is very unlikely that those who like to complain will have good ideas to be able to make them continue to develop to be better than now.
And because we cannot guarantee what we will face in the future, it would be better if from now on we continue to work and earn money so that we can always be ready to face any situation that may possibly occur in the future.