A sub-title here.
In the previous post I said what everybody says: never play with money you cannot afford to lose.
How much money can you afford to lose?
Well, one month's salary or maximum two months'. It may take you one year to recuperate that amount from a salary.
Losing a 6-month salary is a disaster for many men these days and the chance of fully recuperating the loss is diminished a lot by the possibility of losing the job before all the lost money is saved again.
Playing investment "games" is not for everybody and should not be for everybody.