5. If your winnings are even greater and allow you to quit your job, then use your time to learn finance.
It is not a sustainable income source so don't quit your job unless you have a solid plan in place. And that solid plan should be how you'll live off your big win.
But what if, for some reason, you don't like finances? or maybe you're not good at it.
Although I agree that this is a good advice in general, instead of quitting one's job and living an idle life, why not find your passion and get paid for it? Most people work where they have no choice, because they cannot afford to choose, but winning the lottery, for example, is the perfect scenario where you can take your time to find your vocation and look for a fulfilling job.
If you didn't win a prize big enough to secure your future, it may be better to keep working in something you like, rather than study finance and dedicate yourself to manage your money, if you don't like it.
And even if you won enough to retire comfortably, humans need a purpose in life, and some millionaires end up depressed because they no longer know what to do with their lives, even if they managed well their wealth and they have no worries about their future in that regard.