By my quick math you'd need at least $500k to live off the interest. Are you investing in a plain way (ie. index fund or similar) and just have a really good salary? It sounds like you're banking upwards of $75k/year.
I'll admit, not everyone makes $200k this early. But most people could be financially independent much sooner than they think if they realized that spending doesn't make them happier and started saving instead -- so I suggest this when I get the chance. :)
Lots of people have no idea where their money is going because they don't track spending.