Currently 28, I'm hoping to reach ER by 43 or so.
Don't really have an exact date, but justin's idea of July 4 sounds neat.
I've had three main ways I've gotten as far as I have so far:
1) Decent-sized inheirtance (about $80k) 5 years ago (subsequently invested it in average-performing investments)
2) Working my butt off for a relative's company, earning a decent salary and bonus (also investing it in so-so investments). A sidestep of this is having my employer pay for as much as he can (vehicle, gas, oil changes, health insurance). Not only does it save me taxes of 41.6% (state+federal+SS+Medicare), but it also saves him 7.65% for the employer match, and improves my morale.
3) Living at my parents house for the past 5 years after graduating college. Yes, I know, some people have a stigma associated with this, but I am fully self-sufficient and do it only for financial reasons, which is helping me even more to plow money into savings and watch it climb. Perhaps the larger rule of #3 is very simple living-I require hardly anything to keep me happy, although I do have an annual budget of about $7,500 for relationships (mainly due to airfares, as I am open to the possibilities of long-distance relationships), so I do end up spending a fair amount of money on some things. I'm also going to start a part-time MBA this fall, so there goes a majority of my base salary's disposable income, leaving my investment additions funded from any bonuses that I might snag.
Also, once I finish my MBA, I'm a little unsure of how my compensation might compare...I'll likely end up making less, once you factor in the loss of the various company-paid items, and the salary/bonus, but it'll be somewhat more enjoyable and hopefully less stressful (read: not working with unions, my brother, my brother-in-law, and a host of other problems).