FI is a state of mind as much as it is a balance sheet number
We started our FI journey in my mid 30s after a decade of partying and traveling. I'm now in my mid 50s and can say that I've reached FI.
As background, we set modest goals for what FI might look like, as they were met we upped each goal and kept grinding.
We could have (should have!) stopped earlier and saved a lot of anxiety. It's only in the last month that I realized that my goal should have been lifestyle optionality rather than a fixed number target.
With this realization our decisions about work and expenditure are not based on fearing missing goals, but what feels right and the diminishing return on a nice NW by continuing the grind.
Strangely having this choice has inspired me to keep working but be emotionally disconnected from threats of downsizings, office politics and other BS.
You check NW and market performance regularly, it's also worthwhile taking stock of your emotional state on a regular basis.
Stay disciplined but be realistic of the personal cost you're paying.