When thinking about years of work until financial independence, its worth understanding the impact that savings rate has - the fraction of post-tax income remaining to invest in growth assets after expenses.

If you're not familiar with savings rate, here's a simple calculator to help build intuition. The assumptions of asset returns & portfolio required to sustain retirement are a bit optimistic, but it's directionally correct: https://networthify.com/calculator/earlyretirement

You need roughly a 15% savings rate to support traditional retirement age. If you're fortunate enough to create & sustain a situation where your income net tax is a lot higher than your annual expenses, the timeline accelerates significantly.