If you are retiring after 6 years of actually working, then there is much more to story here like a massive inheritance. Good for you.
There is no job you can retire from after 6 years save from a start up company that goes public.
Inherited money is awesome although I would strongly question the wisdom of pursuing medicine/research (you appear to be an MD/PhD?) if your clinical lifetime experience will be a mere 6 years. But I don't know your whole story so whatever. Perhaps this inheritance was unexpected, which is all the better.
I love the concept of inherited wealth which works for you into perpetuity, something like rental income or dividends etc. It frees you up to really explore, which I miss as Im basically a "grinder". Being a grinder takes a toll on your soul though, you become bitter and cynical over the years...would have been much better with 8 figures in the bank for me.
Good luck.
Life doesn't have to be that way dude. Like QQ mentioned, early retirement types save considerable amounts of money, then live off of either the interest or sustainable income streams that are derived from that saved money (such as properties). If you are a physician that makes 300k a year in, say, Texas, that equates to $217,987 after taxes, assuming no deductions aside from the two standard ones. Spend $27,987 of that a year, and you've got $190,000 left to invest. The first thing you do is pay down your home- get something reasonably priced, and you can knock it out in 1-2 years. After that, just bank it all. At a relatively conservative rate of interest (7%), you would have $1,454,233.39 in 6 years. At a steady withdrawal rate (4%) that money will allow you to live on $58,169.33 a year that will automatically adjust for inflation, assuming your relatively conservative portfolio continues to adjust itself for inflation. Better still, this money will be considered capital gains, so you will only pay 15% tax on it.
Want to live better in retirement? Work a couple more years. Working for 9 years should net you enough banked cash to have a near-six figure income in retirement, should you so choose, as you'll now have $2,435,073.85 in the bank, equating to $97,402.954/yr at a sustainable 4% draw. Want to live better before retirement? Work more hours or postpone retirement by a couple of years. If you live off of $47,987/yr you'll be investing 170k/yr. This reduces your 6 year savings to $1,301,122.35, which nets you an inflation adjusted $52,044.894/year to live off of at a sustainable draw. At 10 years, it nets you $2,513,093.60, or $100,523.74 at a sustainable draw. Keep in mind that all of these incomes will be taxed at a mere 15%, so you're making $7,120.43/mo post-tax for sitting on your ass at the ten year mark, and that's if you suck at selling your capital losses at the right time, which can often negate your tax burden entirely.
Personally, I have a similar plan to this, but want to pay down my debt as a primary goal rather than buying a house, and use my money to purchase some rental property with an 8-9% return that I can use as a residence and investment.