Well i have something interesting to tell you all in here.
At the beggining, i thought that i had the key, the secret, to win on Roulette.
I was always winning, and it was something brilliant for me, but in the end, it is impossible to calculate how the rows are going to be.
So, i ended up losing a bunch of money.
This is the the fact that people do believe they know wining from gambling's trick and might be they would have even won but it cannot be a continuous process and if you continue gambling for long time as you mentioned you would end up on a losing note. So better to either take the winning amount in beginning and move away or just gamble for fun.
It's hard to do that in the actual game, easy when you are planning, one of the reason why we loss is because we failed
to implement discipline in gambling and discipline should be apply all the time, whether you are winning or losing.
When you gamble without a proper strategy, you will just lost in the end as you are like a captain who doesn't know his destination.