Never would I be asking people for money to be used in gambling.
Good for you.
I always rely to two things. My earnings in gambling and betting and also small amount from salary taken from my other jobs and endeavors.
I'm confuse, so where are you getting the money to gamble when you earn from gambling?
The salary, I would understand since most of us are just taking a portion of our salary for gambling, but the above.

But of course when I say a small amount, I mean amount that I can risk and lose if ever I lost the game. We can never be sure what the future will bring so why trust myself.
Better be safe than sorry many say. And I will follow that approach.
It's not necessary to call it a small or big amount, an amount that you can afford to lose is already enough to determine on what amount you will gamble since everyone has a different amount to gamble, some are just too aggressive, some are just spending a very little amount, but the key here is just to be responsible and gamble what you can afford to lose.