1. Let the money sit in your bank account (wallet) for at least one month. It will allow you to settle down your heightened emotions. Just let the amount sit and do not do anything with it for at least one month.
And after this month you will spend the entire amount?
Oh, no. You should not limit yourself to just 1 month.
This point should be immediately combined with point 5.
4. Consult a certified financial consultant and invest in a diversified portfolio other than gambling, probably for the long term, at least 80% of your winnings.
The main thing is not to forget about diversifying investments in this point, and for a long period, to avoid the desire to spend this money.
The remaining 20% (part) of the winnings can be used for an unplanned trip.
2. Go on a low-cost, week-long vacation with your family and friends (do not tell anybody about your winnings; do not boast) immediately. It will help you make your relationships stronger and will certainly help in doing step 1.
Although I don’t quite understand how this fits in with point 3, which states that there is a ban on changing one’s lifestyle.
3. Do not change your lifestyle immediately, as it will help you to remain disciplined, which will eventually help you out to earn even more.
To stay disciplined, you should wait until your planned vacation.
I think that after a big win you shouldn't change your typical lifestyle, but continue doing what you were doing before.
5. If your winnings are even greater and allow you to quit your job, then use your time to learn finance.
And of course, don't quit your job, which will deprive you of some source of income, even though you will have a big win. Work is not only a source of income, but can be simply be a favorite pastime, as well as a valuable and useful profession in society (for example, a doctor who saves lives). The feeling of being needed by people can have a negative effect in conjunction with winning, which will spur you to get new emotions, for example, in the same casino.
Another important point: money runs out one way or another, and you can also lose it (for various reasons), but you cannot be deprived of skills and abilities, which is another factor for continuing professional activity. But with a win, the focus of development can be directed in a different direction (work in a profession, but not for an employer), rather than the need for hired labor for a salary.