As for Joshua & Ryan, we both use an online-investment tool called Betterment as our personal savings, planning, and investing software. Using Betterment, which costs nothing to set-up and has no minimum-balance requirements, we’ve learned how to invest in our future selves by setting aside a percentage of our income without even noticing it’s gone.

financial freedom before 30

The United Nations definition of inclusive wealth is a monetary measure which includes the sum of natural, human, and physical assets.[6][7] Natural capital includes land, forests, energy resources, and minerals. Human capital is the population's education and skills. Physical (or "manufactured") capital includes such things as machinery, buildings, and infrastructure.
Work wise i'm a bit fortunate to still work at a good company and managers, so it's not a big deal to continue working, although the work can be repetitive and lack of challenge, i consider that a blessing. Still, once you know the date it seems hard to keep still, but the anxiety seems more from the retirement itself (what would I do), rather than the current work. I think for people who are fortunate enough to not worry about financials after retirement, our real challenge is the lifestyle choice and psychological change we need to adapt to.
If you have 20 years left to live and only require $60,000 a year, having $1,200,000 can also be considered enough even if you make zero return. The only problem is that your purchasing power will decline by ~2% a year due to inflation. The other problem is that you don’t know exactly how many years you have left to live. Therefore, it’s always better to have more rather than less.