When gambling you don't have to expect but can only hope you get lucky though you still don't have to rely on the hopes because you could feel disappointed losing all with no single win to boast of for the day.
When we put expectations forward we get tempted to push over our limits and stake with such amounts that will hit badly if we lose it. I idea that you would win huge by staking so much high could definitely lead to a torn pocket.
Gambling will always be gambling. So no matter what formula or strategy you will use, you should not expect anything lucrative out of your gambling activities. Because if you start expecting, you will surely get hook into this addictive activity. And be disappointed for whatever outcome you will get and continue playing if you won't get what you want.