Even if you have one source of income, always, if it is, for example, a salary, as soon as you receive it, set aside even a large amount, but steadily, every month and then find something to reinvest this money in.
The direction you said is a very wise direction and also quite reasonable to be done by people who have a regular salary every month. Because they can immediately choose and see valuable assets that they can take as their future investment because if they only depend on one source such as a monthly salary, it will not provide such a big change in our own lives. So the direction of investment is what needs to be seen in detail so as not to be wrong in placing the money that has been set aside from the results of their own monthly salary.