The secret to side hustles is to find one that can become your road to self-employment. A “job” isn’t likely to ever make one financially independent. A job is way for someone else to profit off your labor. Which means you aren’t reaching your full potential. This can be fine if you are highly skilled, but if you aren’t it will never lead to independence, just a lifetime of dependence on the next job and a unsatisfactory retirement.
My favorite stories are those similar to a friend of mine who never went to college, started selling water skis out of the trunk of his car and built a multi-million dollar business and retired in his early 60’s.
I did it with a side hustle of buying cheap land starting with $5k I saved from a low-paying job at age 30. My jobs would never have brought financial independence.
There is wisdom in what you posted. Please allow me to add to that.
If you think you own your own business, but you are doing all (or most) of the work, you do not have a business, you have a job. The only way to be successful in your own business is for you to manage the labor of others.