You know, this whole "wow, what's it like to win the lottery?!" attitude is what makes the startup world so destructive and, I'll say it, exploitative.

Yes, live an intense life building something cool - but don't forget that most startups fail, and even the ones that succeed often end up having most of their money go to investors and partners rather than the founders and builders.

Also, as other commenters here have noted, you would get a lot more mileage out of limiting your lifestyle and expenses than in focusing on the big payout. Bonus: if that payout comes, it'll last longer if you've grown a realistic approach to life.

I've known a number of people who made "set for life" fortunes, and some of them have blown those fortunes surprisingly quickly.