We saved everything extra plus 20+% of our income and lived entirely on the remaining cash flow no matter what it was. Lean years, fat years, all the same. No Teslas, no BMWs, no Mercedes. No asshole toys to impress other assholes.
Age 42, $350k or so, including an apartment worth about $140k. Saved nearly half of my pay for 20 years, putting basically all of it in low-interest bank accounts (as an American abroad, investment in the stock market is not easy). Bought my apartment in 2008 with my entire savings and started saving all over again. TC 32k to start, about 46k now.
Passive? I earn maybe $200 per year in interest and dividends. But if you count the "free rent" that I get from owning my residence, it feels like I have a passive "income" of almost $1000 per month; all I have to pay is maintenance and property tax, which are cheap compared to my hometown New York.
Passive income is income from past work done. For example, if you took a lien against your current residence and bought another which you rented out, it would generate income which you essentially do not work for as well as pay for it's own loan. Congrats on owning your own place, keep the momentum going!