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.